Use Python 3.9

CI complain with:
 Traceback (most recent call last):
  File "./tools/localazy/generateLocalazyConfig.py", line 39, in <module>
    action = baseAction | {
TypeError: unsupported operand type(s) for |: 'dict' and 'dict'

.github/workflows/sync-localazy.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up Python 3.9
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Setup Localazy
         run: |
           curl -sS https://dist.localazy.com/debian/pubkey.gpg | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/localazy.gpg