Bump actions/checkout from 6 to 7

.github/workflows/cicd-appconfig.yml

@@ -22,7 +22,7 @@ jobs:
   build-appconfig:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: Set up .NET
       uses: actions/setup-dotnet@v5
       with:

.github/workflows/cicd-ld.yml

@@ -21,7 +21,7 @@ jobs:
   build-quickstart:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: Set up .NET
       uses: actions/setup-dotnet@v5
       with:

.github/workflows/code-references.yml

@@ -14,7 +14,7 @@ jobs:
     environment: launchDarklyQuickstart
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
       with:
         fetch-depth: 10 # This value must be set if the lookback configuration option is not disabled for find-code-references. Read more: https://github.com/launchdarkly/ld-find-code-refs#searching-for-unused-flags-extinctions
     - name: LaunchDarkly Code References

.github/workflows/marp-pages.yml

@@ -25,7 +25,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Copy images
         run: mkdir build && cp -R slides/img build/img && cp -R slides/themes build/themes