chore(deps): update dependency python to 3.14 (#8646)

Author: renovate-bot

.github/workflows/docs.yaml

@@ -16,7 +16,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v6
       with:
-        python-version: '3.13'
+        python-version: '3.14'
     - run: pip install --no-deps --require-hashes -r .kokoro/docs/docker/requirements.txt
     - name: Setup PHP
       uses: shivammathur/setup-php@verbose