quote off versions in accordance with https://docs.github.com/en/acti…

…ons/automating-builds-and-tests/building-and-testing-python

.github/workflows/python-package.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8, 3.9, 3.10, 3.11]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
 
     steps:
       - uses: actions/checkout@v3