Replace `pip` and `venv` with `uv`

[tpvasconcelos]

References:

• https://astral.sh/blog/uv
• https://github.com/astral-sh/uv

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📚 Documentation preview 📚: https://ridgeplot--189.org.readthedocs.build/en/189/

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 85.78%. Comparing base (f5d5289) to head (2588a5b).

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #189 +/- ## ========================================== - Coverage 86.06% 85.78% -0.28% ========================================== Files 10 10 Lines 409 401 -8 Branches 70 70 ========================================== - Hits 352 344 -8 Misses 48 48 Partials 9 9 ```

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