chore(deps): update uv lock and python version

[ZohebShaikh]

Currently there are 40 dependency security alert.

python-copier#issue-339 should be prioritised to enable renovate.

Changes in the PR:

1. Change python-version to 3.14
2. Update all uv.lock file
3. Replace httpx with httpx2
4. Upgrade to latest ophyd-async Which has the changed to use ADWriterFactory
5. Change HTTP_422_UNPROCESSABLE_ENTITY to HTTP_422_UNPROCESSABLE_CONTENT as the previous is deprecated

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.93%. Comparing base (32c57b9) to head (5193be2).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1579   +/-   ##
=======================================
  Coverage   95.93%   95.93%           
=======================================
  Files          44       44           
  Lines        3270     3270           
=======================================
  Hits         3137     3137           
  Misses        133      133           

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