[ci] run lint job on python3.11 for now instead of latest 3.12

somehow it fails while installing skia-pathops, trying to build from source. Probably we only need to bump requirements-dev.txt but I want to do that separately

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: "3.x"
+        python-version: "3.11"
     - name: Install dependencies
       run: pip install tox
     - name: Run style and typing checks