CI: Update host OS version, add Python 3.13

[EwoutH]

Some CI maintenance:

• Update the Pypi.yml host OSes to their latest compatible versions
• Add Python 3.13 to the test matrix.
  • This needs CI: Allow passing pre-release Python versions to setup-python workflows#10

[codspeed-hq]

CodSpeed Performance Report

Merging #323 will not alter performance

_{Comparing EwoutH:ci-py313 (1cb7055) with main (2d67b4c)}

Summary

✅ 66 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (2d67b4c) to head (1cb7055).
Report is 11 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #323   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           21        21           
  Lines         2062      2062           
=========================================
  Hits          2062      2062           

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[EwoutH]

If preferred, feel free to work further on this branch!

[tlambert03]

thanks, yeah I'm starting to look into it today. will certainly take some CI adjustment, and it may only be possible to ship the non-mypyc (pure python) wheels at 3.13 release time (mypyc often trails python release dates slightly). will update!