test(fixture): add test fixture for skipped contributors

[orhun]

Description

Adds a test fixture for GitHub integration but all commits skipped, just to see if the contributors are going to be skipped as well.

Motivation and Context

related to #1351

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (no code change)
• Refactor (refactoring production code)
• Other

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly (if applicable).
• I have formatted the code with rustfmt.
  • cargo +nightly fmt --all
• I checked the lints with clippy.
  • cargo clippy --tests --verbose -- -D warnings
• I have added tests to cover my changes.
• All new and existing tests passed.
  • cargo test

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 47.40%. Comparing base (ee8bfd1) to head (54a1b9f).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1481   +/-   ##
=======================================
  Coverage   47.40%   47.40%           
=======================================
  Files          24       24           
  Lines        2129     2129           
=======================================
  Hits         1009     1009           
  Misses       1120     1120           

Flag	Coverage Δ
unit-tests	47.40% <ø> (ø)

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