github actions: Update the python versions tested

[fruch]

since some of the version in the list are deprecated we shouldn't try using them anymore

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.36%. Comparing base (e2f8547) to head (c7f781b).
Report is 1 commits behind head on master.

❗ Current head c7f781b differs from pull request most recent head 203cf6f. Consider uploading reports for the commit 203cf6f to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #31   +/-   ##
=======================================
  Coverage   92.36%   92.36%           
=======================================
  Files           1        1           
  Lines         275      275           
=======================================
  Hits          254      254           
  Misses         21       21           

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