Use Python 311

Author: giswqs

.github/workflows/docs.yml

@@ -10,7 +10,7 @@ jobs:
             - uses: actions/checkout@v4
             - uses: actions/setup-python@v5
               with:
-                  python-version: "3.12"
+                  python-version: "3.11"
             - name: Install dependencies
               run: |
                   python -m pip install --upgrade pip