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 91.78%. Comparing base (6958c61) to head (2a38c07).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1034      +/-   ##
==========================================
+ Coverage   91.75%   91.78%   +0.03%     
==========================================
  Files          50       50              
  Lines        3215     3215              
==========================================
+ Hits         2950     2951       +1     
+ Misses        265      264       -1     

Flag	Coverage Δ
e2e	35.64% <ø> (ø)
integration	57.41% <ø> (+0.03%)	⬆️
unit	83.07% <ø> (ø)

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