ci: Pin Python version to at least 3.10 for LiteLLM

[alexander-alderman-webb]

Update our test matrix with new releases of integrated frameworks and libraries.

How it works

• Scan PyPI for all supported releases of all frameworks we have a dedicated test suite for.
• Pick a representative sample of releases to run our test suite against. We always test the latest and oldest supported version.
• Update tox.ini with the new releases.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.25%. Comparing base (b61383b) to head (cbd663a).
⚠️ Report is 3 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5202      +/-   ##
==========================================
- Coverage   84.26%   84.25%   -0.01%     
==========================================
  Files         181      181              
  Lines       18441    18441              
  Branches     3283     3283              
==========================================
- Hits        15539    15538       -1     
  Misses       1891     1891              
- Partials     1011     1012       +1     

see 1 file with indirect coverage changes