can we just do this? (#2208)

.github/workflows/docs.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: 3.11
+          python-version: 3.9
       - name: Install ghp-import
         run: pip install ghp-import
       - name: Build documentation