[TRIVIAL] Raises minimum Python version to 3.11

[yuce]

We are raising the minimum Python version to 3.11 due to the new asyncio module.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.35%. Comparing base (aae561c) to head (6971a17).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #742      +/-   ##
==========================================
+ Coverage   95.32%   95.35%   +0.03%     
==========================================
  Files         378      378              
  Lines       21989    21989              
==========================================
+ Hits        20960    20967       +7     
+ Misses       1029     1022       -7     

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