chore: Use coverage.py sources_dir setting

[edgarrmondragon]

Summary by Sourcery

Update coverage configuration to use the newer sources_dir setting in coverage.py

Enhancements:

• Migrate from deprecated source to source_dirs configuration in coverage.py

Chores:

• Update coverage package version to 7.8 to support new configuration syntax

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📚 Documentation preview 📚: https://meltano-sdk--2942.org.readthedocs.build/en/2942/

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request updates the coverage.py configuration to use the source_dirs setting instead of source. It also updates the coverage package version to 7.8 in pyproject.toml and uv.lock.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Configured coverage.py to use the source_dirs setting instead of source.	Replaced the source setting with source_dirs in the tool.coverage.run section of pyproject.toml. Updated the coverage package version from 7.4 to 7.8 in the testing dependencies.	pyproject.toml
Updated coverage package version in uv.lock.	Updated the coverage package version from 7.4 to 7.8.	uv.lock

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.08%. Comparing base (af063ea) to head (e36f1e2).
Report is 18 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2942      +/-   ##
==========================================
- Coverage   91.45%   91.08%   -0.37%     
==========================================
  Files          63       70       +7     
  Lines        5288     5690     +402     
  Branches      675      738      +63     
==========================================
+ Hits         4836     5183     +347     
- Misses        319      355      +36     
- Partials      133      152      +19     

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[codspeed-hq]

CodSpeed Performance Report

Merging #2942 will not alter performance

_{Comparing edgarrmondragon/chore/coverage-source-dirs (e36f1e2) with main (af063ea)}

Summary

✅ 7 untouched benchmarks