Update pipeline

[hejamu]

This PR changes the following:

• moved the CHANGELOG check from the build to the docs tox job
• skip the CHANGELOG check when on main branch
• Bump the codecov action to version 4 and use the upload token
• Align python versions with current mda

[pep8speaks]

Hello @hejamu! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2024-07-08 12:02:05 UTC

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.73%. Comparing base (561b998) to head (b8278d9).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #119      +/-   ##
==========================================
- Coverage   85.94%   85.73%   -0.21%     
==========================================
  Files           8        8              
  Lines         569      561       -8     
  Branches      112      120       +8     
==========================================
- Hits          489      481       -8     
  Misses         66       66              
  Partials       14       14              

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