feat: test and support for Python 3.13

[GabDug]

Currently blocked as ddtrace does not support CPython 3.13 yet (see DataDog/dd-trace-py#10932)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.40%. Comparing base (6b39973) to head (0e5bdb7).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #21   +/-   ##
=======================================
  Coverage   74.40%   74.40%           
=======================================
  Files          29       29           
  Lines         969      969           
  Branches      187      187           
=======================================
  Hits          721      721           
  Misses        201      201           
  Partials       47       47           

Flag	Coverage Δ
unittests	74.40% <ø> (ø)

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