deps: use `uv` if present

[Oppen]

uv is a compatible pip replacement made in Rust, which runs significantly faster. It saves about 70 seconds on my M3 when installing deps.

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Description

Description of the pull request changes and motivation.

Checklist

• [ ] Linked to Github Issue
• [ ] Unit tests added
• [ ] Integration tests added.
• [ ] This change requires new documentation.
  • [ ] Documentation has been added/updated.
  • [ ] CHANGELOG has been updated.