chore: update version to 0.13.1

[dhaitz]

Description

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Refactoring
• Other (please describe):

Related Issues

Checklist

• I have read the Contributing Guidelines
• My code follows the project's code style (poe lint passes)
• I have added tests for my changes
• All tests pass (poe test)
• I have updated documentation as needed

Additional Notes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.80%. Comparing base (1c09ece) to head (78d645a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #83   +/-   ##
=======================================
  Coverage   85.80%   85.80%           
=======================================
  Files           7        7           
  Lines        1240     1240           
=======================================
  Hits         1064     1064           
  Misses        176      176           

Flag	Coverage Δ
unittests	85.80% <ø> (ø)

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