GOATS-758 GOATs-759: Improve python CI and update dependencies.

[davner]

Checklist

• Added or reviewed a release note in doc/changes.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.77%. Comparing base (4e0487b) to head (e949c98).
⚠️ Report is 85 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #341   +/-   ##
=======================================
  Coverage   74.77%   74.77%           
=======================================
  Files         208      208           
  Lines        6850     6850           
  Branches      459      459           
=======================================
  Hits         5122     5122           
  Misses       1643     1643           
  Partials       85       85           

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