test: update freebayes test names and metadata

[gbadedata]

PR checklist

Closes #7766

Description

Updates the affected freebayes nf-test names where human test data was labelled as sarscov2.

Also adds missing ontology entries to modules/nf-core/freebayes/meta.yml.

Changes

• Renamed three freebayes nf-tests that use homo_sapiens test data.
• Updated the matching nf-test snapshot keys.
• Added missing EDAM ontology entries for freebayes inputs in meta.yml.
• Updated the freebayes stub gzip syntax required by module lint.

Validation

• nf-core modules lint freebayes
• ./nf-test test modules/nf-core/freebayes/tests/main.nf.test

Both passed locally.

[gbadedata]

@vagkaratzas
Local validation completed:

• nf-core modules lint freebayes passed with 67 tests passed, 0 warnings, 0 failures.
• ./nf-test test modules/nf-core/freebayes/tests/main.nf.test passed with 6 tests executed successfully.

The workflows are currently awaiting maintainer approval.

[vagkaratzas]

Ask to join the slack nf-core organization on the nf-core slack github-invitations channel so your workflows can run without maintainer approval!

[vagkaratzas]

LGTM!