Update dependency python to 3.13

Author: renovate[bot]

.github/workflows/tox_ci.yml

@@ -8,7 +8,7 @@ jobs:
       - name: Run black
         uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.13
       - name: install black
         run: pip install "black<23"
       - name: run black