chore(deps): update rust crate serde_yaml to 0.9

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
serde_yaml	dependencies	minor	0.8 -> 0.9
serde_yaml	dev-dependencies	minor	0.8 -> 0.9

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Release Notes

dtolnay/serde-yaml

v0.9.10

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• Make Display for Number produce the same representation as serializing (#​316)

v0.9.9

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• Add serde_yaml::with::singleton_map_recursive

v0.9.8

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• Fix serialization of TaggedValue when used with to_value (#​313)

v0.9.7

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• Allow an empty plain scalar to deserialize as an empty map or seq (#​304)

v0.9.6

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• Fix tag not getting serialized in certain map values (#​302)

v0.9.5

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• Implement Display trait for serde_yaml::value::Tag (#​307, thanks @​masinc)

v0.9.4

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• Add serde_yaml::with::singleton_map for serialization of enums as a 1-entry map (#​300)
• Reject duplicate keys when deserializing Mapping or Value (#​301)

v0.9.3

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• Add categories to crates.io metadata
• Add keywords to crates.io metadata

v0.9.2

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• Improve Debug representation of serde_yaml::Error

v0.9.1

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• Fix panic on some documents containing syntax error (#​293)
• Improve error messages that used to contain duplicative line/column information (#​294)

v0.9.0

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API documentation: https://docs.rs/serde_yaml/0.9

Highlights

• The serde_yaml::Value enum gains a Tagged variant which represents the deserialization of YAML's !Tag syntax. Tagged scalars, sequences, and mappings are all supported.

• An empty YAML input (or document containing only comments) will deserialize successfully to an empty map, empty sequence, or Serde struct as long as the struct has only optional fields. Previously this would error.

• A new .apply_merge() method on Value implements YAML's << merge key convention.

• The Debug representation of serde_yaml::Value has gotten vastly better (https://github.com/dtolnay/serde-yaml/pull/287).

• Deserialization of borrowed strings now works.

  #[derive(Deserialize, Debug)]
  struct Struct<'a> {
      borrowed: &'a str,
  }
  
  let yaml = "borrowed: 'kölcsönzött'\n";
  let value: Struct = serde_yaml::from_str(yaml)?;
  println!("{:#?}", value);

• Value's and Mapping's methods get and get_mut have been generalized to support a &str argument, as opposed to requiring you to allocate and construct a Value::String for indexing into another existing Value.

• Mapping exposes more APIs that have become conventional on map data structures, such as .keys(), .values(), .into_keys(), .into_values(), .values_mut(), and .retain(|k, v| …).

Breaking changes

• Serialization no longer produces leading ---\n on the serialized output. You can prepend this yourself if your use case demands it.

• Serialization of enum variants is now based on YAML's !Tag syntax, rather than JSON-style singleton maps.

  #[derive(Serialize, Deserialize)]
  enum Enum {
      Newtype(usize),
      Tuple(usize, usize, usize),
      Struct { x: f64, y: f64 },
  }

  - !Newtype 1
  - !Tuple [0, 0, 0]
  - !Struct {x: 1.0, y: 2.0}

• A bunch of non-base-10 edge cases in number parsing have been resolved. For example 0x+1 and ++0x1 are now parsed as strings, whereas they used to be incorrectly treated as numbers.

• Deserializers obtained through iteration can no longer be iterated further:

  let deserializer = serde_yaml::Deserializer::from_str(multiple_documents);
  for de in deserializer {
      // correct:
      let myvalue = T::deserialize(de)?;
  
      // incorrect: used to produce some questionable result, now produces 0 sub-documents
      for questionable in de {
          let wat = T::deserialize(questionable)?;
      }
  }

• The abandoned yaml-rust crate is no longer used as the YAML backend. The new libyaml-based backend surely has different edge cases and quirks than yaml-rust.

• Some excessive PartialEq impls have been eliminated.

• The serde_yaml::to_vec function has been removed. Use serde_yaml::to_writer for doing I/O, or use serde_yaml::to_string + .into_bytes() on the resulting String.

• The serde_yaml::seed module has been removed. Now that a serde_yaml::Deserializer is publicly available, the same use cases can be addressed via seed.deserialize(Deserializer::from_str(…)) instead.

Bugfixes

• Empty values in a mapping are supported, and deserialize to empty string when the corresponding struct field is of type string. Previously they would deserialize to "~" which makes no sense.

• 128-bit integer deserialization now supports hex and octal input.

• Serde_yaml now includes a mitigation against a "billion laughs" attack in which malicious input involving YAML anchors and aliases is used to consume an amount of processing or memory that is exponential in the size of the input document. Serde_yaml will quickly produce an error in this situation instead.

v0.8.26

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• Add flush method to Serializer (#​251, thanks @​jturner314-nrl)

v0.8.25

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• Add to "encoding" category on crates.io (#​246)

v0.8.24

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• Work around indexmap/autocfg not always properly detecting whether a std sysroot crate is available (#​243, thanks @​cuviper)

v0.8.23

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• Fix handling of YAML 1.1-style octals that begin with + or - sign (#​228)

v0.8.22

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• Switch float serializer to use the same float formatting library as serde_json

v0.8.21

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• Avoid emitting surplus precision when serializing f32 (#​214, thanks @​cheradenine)

v0.8.20

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• Recognize tags on quotes scalars (#​210, thanks @​knkski)

v0.8.19

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• Add an Entry API for serde_yaml::Mapping (https://docs.rs/serde_yaml/0.8.19/serde_yaml/struct.Mapping.html#method.entry)

v0.8.18

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• Fix bytes getting dropped when serializing large object to a writer (#​206, thanks @​jturner314)

v0.8.17

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• Add IntoDeserializer implementation to Value enum (#​192, thanks @​luke-biel)

v0.8.16

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• Add a Serializer and Deserializer type (#​185, #​186)

  let mut buffer = Vec::new();
  let mut ser = serde_yaml::Serializer::new(&mut buffer);
  
  let mut object = BTreeMap::new();
  object.insert("k", 107);
  object.serialize(&mut ser)?;
  
  let de = serde_yaml::Deserializer::from_slice(&buffer);
  let value = Value::deserialize(de)?;
  println!("{:?}", value);

• Support multi-doc serialization (#​187)

  let mut buffer = Vec::new();
  let mut ser = serde_yaml::Serializer::new(&mut buffer);
  
  let mut object = BTreeMap::new();
  object.insert("k", 107);
  object.serialize(&mut ser)?;
  
  object.insert("j", 106);
  object.serialize(&mut ser)?;
  
  assert_eq!(buffer, b"---\nk: 107\n...\n---\nj: 106\nk: 107\n");

• Support multi-doc deserialization (#​189)

  let input = "---\nk: 107\n...\n---\nj: 106\n";
  
  for document in serde_yaml::Deserializer::from_str(input) {
      let value = Value::deserialize(document)?;
      println!("{:?}", value);
  }

v0.8.15

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• Declare dependency version requirements compatible with minimal-versions lockfile (#​183)

v0.8.14

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• Fix handling of scalars consisting of digits with leading zeros (#​180, thanks @​stephanbuys)

v0.8.13

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• Documentation improvements

v0.8.12

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• Add serde_yaml::mapping module containing Mapping's various iterator types: Iter, IterMut, IntoIter
• Fix deserialization of certain strings incorrectly as NaN or infinity; only .nan and .inf and -.inf are YAML's permitted representations for NaN and infinity

v0.8.11

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• Add seeded versions of deserialize functions (#​135, thanks @​toasteater)

v0.8.10

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• Implement PartialEq for Value == u64, Value == bool (#​138, #​139, thanks @​CAD97)

v0.8.9

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• Add Value::get_mut to index into a &mut Value, returning Option

v0.8.8

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• Provide an implementation of Default for serde_yaml::Value which produces Value::Null (#​120, thanks @​macisamuele)

v0.8.7

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• Allow YAML tags to be used to specify an enum variant (#​115, thanks @​EliSnow)

v0.8.6

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• 128-bit integer support (#​110)

v0.8.5

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• Support integers represented in binary, e.g. 0b0101 (#​106, thanks @​p4l1ly)

v0.8.4

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• Limit recursion to 128 levels to avoid stack overflows (#​105)

v0.8.3

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• Fix possible panic during deserialization (#​101)

v0.8.2

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• Documentation improvements

v0.8.1

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• Documentation improvements

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[siegfriedweber]

serde_yaml will be upgraded together with the next operator-rs version containing stackabletech/operator-rs#450.

[renovate]

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