Switch to Python 3.11 in publish action

.github/workflows/pages.yml

@@ -31,7 +31,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.10"
+          python-version: "3.11"
       - name: Install sphinx env
         run: python -m pip install -r docs/requirements.txt
       - name: Build documentation