Drop Python 3.9, reinstate 3.14/pydantic jobs

[wRAR]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 96.77419% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 98.30%. Comparing base (a358dfe) to head (15047de).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
itemadapter/_imports.py	96.29%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #112      +/-   ##
==========================================
- Coverage   99.86%   98.30%   -1.57%     
==========================================
  Files           5        5              
  Lines         760      766       +6     
  Branches        0      136     +136     
==========================================
- Hits          759      753       -6     
  Misses          1        1              
- Partials        0       12      +12     

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[wRAR]

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