ci: Use platform specific caching for compatibility tests

[FrederikBolding]

Enable platform specific caching for compatibility tests that run on Mac OS and Windows.

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Note

Enables platform-specific caching in the platform compatibility CI job (macOS and Windows).

^{Written by Cursor Bugbot for commit 1b92f66. This will update automatically on new commits. Configure here.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.28%. Comparing base (f388e60) to head (1b92f66).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3708   +/-   ##
=======================================
  Coverage   98.28%   98.28%           
=======================================
  Files         418      418           
  Lines       12152    12152           
  Branches     1876     1876           
=======================================
  Hits        11943    11943           
  Misses        209      209           

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