chore: update 1 missed instance of new default python version

Author: mbdevpl

.github/workflows/python.yml

@@ -65,7 +65,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
       - run: pip install build
       - run: python -m build
       - uses: pypa/gh-action-pypi-publish@release/v1