Remove <2 upper version limit for poetry in CI

[greschd]

The upper version limit does not match the version 2.1.3 used to generate the current lock file.

Update the pre-commit configuration to match changes in the poetry CLI.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.95%. Comparing base (a0e0b67) to head (7e0ae28).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #598      +/-   ##
==========================================
+ Coverage   89.93%   89.95%   +0.02%     
==========================================
  Files          54       54              
  Lines        4202     4202              
==========================================
+ Hits         3779     3780       +1     
+ Misses        423      422       -1     

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