fix: remove 3.9 from ci matrix

[ion-elgreco]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.27%. Comparing base (26e2b42) to head (b63563e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #3978       +/-   ##
===========================================
+ Coverage   26.22%   74.27%   +48.04%     
===========================================
  Files         124      152       +28     
  Lines       19886    39655    +19769     
  Branches    19886    39655    +19769     
===========================================
+ Hits         5216    29452    +24236     
+ Misses      14300     8867     -5433     
- Partials      370     1336      +966     

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