Add explicit support for python 3.11 and 3.12

[ppinchuk]

Just adding GHA tests...

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (40dffcb) 98.13% compared to head (2ea93a8) 98.06%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #31      +/-   ##
==========================================
- Coverage   98.13%   98.06%   -0.07%     
==========================================
  Files          28       28              
  Lines        2892     2897       +5     
  Branches      485      485              
==========================================
+ Hits         2838     2841       +3     
- Misses         34       35       +1     
- Partials       20       21       +1     

Flag	Coverage Δ
unittests	98.06% <80.00%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
gaps/status.py	99.51% <100.00%> (ø)
gaps/utilities.py	100.00% <100.00%> (ø)
gaps/version.py	100.00% <100.00%> (ø)
gaps/hpc.py	98.94% <50.00%> (-1.06%)	⬇️

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