chore: pin GitHub Actions to full-length commit SHAs

[joshuarli]

Summary

• Pin all GitHub Actions references in .github/ workflow files to full-length commit SHAs

Generated by devenv pin_gha.

🤖 Generated with Claude Code

[github-actions]

Codecov Results 📊

✅ 174 passed | Total: 174 | Pass Rate: 100% | Execution Time: 255ms

📊 Comparison with Base Branch

Metric	Change
Total Tests	—
Passed Tests	—
Failed Tests	—
Skipped Tests	—

✨ No test changes detected

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 750 uncovered lines.
✅ Project coverage is 55.46%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    55.46%    55.46%        —%
==========================================
  Files           24        24         —
  Lines         1679      1679         —
  Branches      1208      1208         —
==========================================
+ Hits           929       929         —
- Misses         750       750         —
- Partials        95        95         —

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Generated by Codecov Action

[MathurAditya724]

nope