Add tests on Python 3.13 in GitHub Actions

[TaiSakuma]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.86%. Comparing base (9ed118f) to head (b36a4a1).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #111      +/-   ##
==========================================
+ Coverage   90.80%   90.86%   +0.06%     
==========================================
  Files         112      112              
  Lines        4381     4381              
  Branches      205      205              
==========================================
+ Hits         3978     3981       +3     
+ Misses        363      361       -2     
+ Partials       40       39       -1     

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