build(docker): update CI and docker to pythono 3.11 using uv

[frgfm]

This PR introduces the following modifications:

• update Dockerfile and CI to use python3.11 (faster execution)
• use uv instead of pip everywhere it's possible (dependency installation is considerably faster with that)
• use env variable for easier CI workflow version bump

[socket-security]

New and removed dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher

🚮 Removed packages: pypi/[email protected], pypi/[email protected]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.83%. Comparing base (516aa35) to head (ee5a997).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #402   +/-   ##
=======================================
  Coverage   84.83%   84.83%           
=======================================
  Files          35       35           
  Lines         996      996           
=======================================
  Hits          845      845           
  Misses        151      151           

Flag	Coverage Δ
backend	84.35% <ø> (ø)
client	92.06% <ø> (ø)

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