remove pytest pin

[d-v-b]

removes the pin on the upper bound of pytest, as the motivating reason for that pin seems to be resolved.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.90%. Comparing base (65fec71) to head (988a97f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3619   +/-   ##
=======================================
  Coverage   60.90%   60.90%           
=======================================
  Files          86       86           
  Lines       10174    10174           
=======================================
  Hits         6196     6196           
  Misses       3978     3978           

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[d-v-b]

pre-commit failure is unrelated. and we should look at removing the pytest-asyncio pin