Drop Python 3.9, reinstate 3.14/pydantic jobs

[wRAR]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.24%. Comparing base (da9e9cc) to head (ae3795e).

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #112       +/-   ##
===========================================
- Coverage   99.86%   89.24%   -10.63%     
===========================================
  Files           5        5               
  Lines         756      753        -3     
  Branches        0      134      +134     
===========================================
- Hits          755      672       -83     
- Misses          1       71       +70     
- Partials        0       10       +10     

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[wRAR]

Core Pydantic V1 functionality isn't compatible with Python 3.14 or greater.