Update dependency python to 3.13

Author: renovate[bot]

.github/workflows/flake8.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
-        python-version: 3.8
+        python-version: 3.13
     - name: Install
       run: |
         python -m pip install --upgrade pip