CI: Add Python 3.11 to the CI

[math-fehr]

No description provided.

[codecov]

Codecov Report

Base: 89.35% // Head: 90.18% // Increases project coverage by +0.83% 🎉

Coverage data is based on head (f09a678) compared to base (4d3491f).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #303      +/-   ##
==========================================
+ Coverage   89.35%   90.18%   +0.83%     
==========================================
  Files          49       50       +1     
  Lines        6672     6799     +127     
  Branches     1118     1455     +337     
==========================================
+ Hits         5962     6132     +170     
+ Misses        482      429      -53     
- Partials      228      238      +10     

Impacted Files	Coverage Δ
tests/test_attribute_definition.py	94.61% <100.00%> (ø)
xdsl/dialects/cmath.py	80.64% <0.00%> (-4.55%)	⬇️
xdsl/dialects/builtin.py	81.44% <0.00%> (-2.22%)	⬇️
xdsl/parser.py	83.49% <0.00%> (-0.01%)	⬇️
tests/test_parser.py	100.00% <0.00%> (ø)
tests/dialects/test_arith.py	100.00% <0.00%> (ø)
tests/test_printer.py	98.07% <0.00%> (+0.07%)	⬆️
xdsl/printer.py	95.71% <0.00%> (+0.12%)	⬆️
xdsl/irdl.py	85.16% <0.00%> (+0.33%)	⬆️
xdsl/dialects/arith.py	94.63% <0.00%> (+18.14%)	⬆️

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[superlopuh]

Same error as I have locally in the Python-based Testing

[superlopuh]

LGTM

[superlopuh]

Thank you