feat: support Python 3.13 and 3.14

[josafatburmeister]

No description provided.

[github-actions]

The documentation for this pull request was deployed at https://ai4trees.github.io/pointtree/pr142.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
...ttree/evaluation/_instance_segmentation_metrics.py	100.00% <100.00%> (ø)
...instance_segmentation/_coarse_to_fine_algorithm.py	97.53% <100.00%> (ø)

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