Test Jupytext with Python 3.13

[mwouts]

Closes #1242

[github-actions]

Thank you for making this pull request.

Did you know? You can try it on Binder: or .

Also, the version of Jupytext developed in this PR can be installed with pip:

HATCH_BUILD_HOOKS_ENABLE=true pip install git+https://github.com/mwouts/jupytext.git@test_with_python313

(this requires nodejs, see more at Developing Jupytext)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.05%. Comparing base (070ba88) to head (9f06411).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1251      +/-   ##
==========================================
+ Coverage   97.00%   97.05%   +0.04%     
==========================================
  Files          29       29              
  Lines        4479     4479              
==========================================
+ Hits         4345     4347       +2     
+ Misses        134      132       -2     

Flag	Coverage Δ
external	75.11% <ø> (ø)
functional	88.55% <ø> (ø)
integration	77.25% <ø> (ø)
unit	66.56% <ø> (ø)

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