chore: Pin GitHub Actions to specific commit hashes

[lola831]

Description

This PR updates our workflows to use fixed, verified commit hashes for GitHub Actions instead of version tags to enhance security.

Issue Link

N/A

Checklist

• I have tested the changes locally via pytest and/or other means
• I have added or updated relevant documentation
• I have autoformatted the code with black and isort
• I have added test cases (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.30%. Comparing base (5d36cce) to head (508566d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #333      +/-   ##
==========================================
- Coverage   91.38%   91.30%   -0.09%     
==========================================
  Files          54       54              
  Lines       13579    13577       -2     
==========================================
- Hits        12409    12396      -13     
- Misses       1170     1181      +11     

see 4 files with indirect coverage changes

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