Add python 3.13 compatibility

[thangleiter]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 43.75000% with 9 lines in your changes missing coverage. Please review.

Project coverage is 83.68%. Comparing base (26c755c) to head (0ccd88d).

Files with missing lines	Patch %	Lines
filter_functions/superoperator.py	43.75%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #104      +/-   ##
==========================================
- Coverage   83.97%   83.68%   -0.30%     
==========================================
  Files           9        9              
  Lines        2272     2286      +14     
  Branches      427      429       +2     
==========================================
+ Hits         1908     1913       +5     
- Misses        338      347       +9     
  Partials       26       26              

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