Change Python 3.10 in CI script to string to avoid removal of 0

Author: Spiess

.github/workflows/python-package.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ 3.8, 3.9, 3.10, 3.11, 3.12 ]
+        python-version: [ 3.8, 3.9, "3.10", 3.11, 3.12 ]
 
     # Setup Cottontail DB service container
     services: