Switched Pages CI to Python 3.11.

Author: xvitaly

.github/workflows/gh-pages.yaml

@@ -18,7 +18,7 @@ jobs:
       - name: Setting up Python interpreter
         uses: actions/setup-python@v4
         with:
-          python-version: '3.10'
+          python-version: '3.11'
       - name: Installing dependencies
         run: |
           pip install --upgrade pip