chore(deps): remove unused dycw-pytest-only dev dependency

[vdusek]

Removes the dycw-pytest-only dev dependency, which isn't used anywhere in the test suite, and updates uv.lock accordingly.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.56%. Comparing base (82da8d4) to head (3e7e640).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #935   +/-   ##
=======================================
  Coverage   94.56%   94.56%           
=======================================
  Files          48       48           
  Lines        5119     5119           
=======================================
  Hits         4841     4841           
  Misses        278      278           

Flag	Coverage Δ
integration	92.94% <ø> (-0.02%)	⬇️
unit	83.43% <ø> (ø)

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