chore(deps): update dependency astral-sh/uv to v0.9.21

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
astral-sh/uv	uses-with	patch	0.9.20 → 0.9.21

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Release Notes

astral-sh/uv (astral-sh/uv)

v0.9.21

Compare Source

Released on 2025-12-30.

Bug fixes

• Fix regression where zstd distribution hashes were not considered valid (#​17265)

Documentation

• Fix a typo in the resolution documentation (#​17258)
• Fix a typo in python install --default documentation (#​9826)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.00%. Comparing base (8468e28) to head (9e2665b).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1509   +/-   ##
=======================================
  Coverage   79.00%   79.00%           
=======================================
  Files         354      354           
  Lines       11510    11510           
  Branches      526      526           
=======================================
  Hits         9093     9093           
  Misses       2236     2236           
  Partials      181      181           

Flag	Coverage Δ
unittests	79.00% <ø> (ø)

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