Update ci.yaml

Python 3.10

.github/workflows/ci.yaml

@@ -31,7 +31,7 @@ jobs:
       - uses: ./.github/actions/setup
         with:
           os: "ubuntu-latest"
-          python-version: "3.9"
+          python-version: "3.10"
           venv-id: "docs"
           poetry-dependency-install-flags: "--all-extras --only 'main,docs'"
       - name: docs