Modernize CI workflows

[omus]

Noticed CI failures in #362

[omus]

error - 2025-03-05 21:01:59,213 -- Upload failed: {"message":"Token required because branch is protected"}

Some work to do for CodeCov

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.85%. Comparing base (175e431) to head (f4aa9a7).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #363      +/-   ##
==========================================
- Coverage   94.58%   92.85%   -1.74%     
==========================================
  Files           7        7              
  Lines         739      742       +3     
==========================================
- Hits          699      689      -10     
- Misses         40       53      +13     

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[omus]

I have correctly guessed the CodeCov token secret name. Tokenless uploads are possible here but would need to be enabled. See: https://docs.codecov.com/docs/codecov-tokens#uploading-without-a-token

[omus]

Make code coverage informational only

Coverage reductions no longer cause CI checks to fail

[quinnj]

thanks for this