Switch CI to Python 3.10

Author: valeros

.github/workflows/examples.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Set up Python 3
         uses: actions/setup-python@v3
         with:
-          python-version: "3.9"
+          python-version: "3.10"
       - name: Install dependencies
         run: |
           pip install -U https://github.com/platformio/platformio/archive/develop.zip