chore: support Python 3.13

[khneal]

Python 3.13 support.

Imitates #166

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.62%. Comparing base (59a58e0) to head (32ed8f7).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #245   +/-   ##
=======================================
  Coverage   93.62%   93.62%           
=======================================
  Files          65       65           
  Lines        2888     2888           
  Branches      152      152           
=======================================
  Hits         2704     2704           
  Misses        134      134           
  Partials       50       50           

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[khneal]

@ab93 - thank you for approving.

Note that there are other tests that assume the order of returned tests. I only modified the tests that were failing due to order, but I can also update the other tests (ideally in a future PR) if preferred.