Remove EOL Python 3.7 and 3.8 from CI

[mrbean-bremen]

• add Python 3.13

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.50%. Comparing base (e62fc31) to head (456860a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #177   +/-   ##
=======================================
  Coverage   98.50%   98.50%           
=======================================
  Files           5        5           
  Lines         601      601           
  Branches      131      131           
=======================================
  Hits          592      592           
  Misses          2        2           
  Partials        7        7           

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