Fix: Correct Python Version Syntax from 3.10 to '3.10'

link: actions/setup-python#160

Author: mannmi

.github/workflows/python-tests.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         # Test against multiple Python versions
-        python-version: [3.7, 3.8, 3.9, 3.10, 3.11]
+        python-version: [3.7, 3.8, 3.9, '3.10', 3.11]
 
     steps:
     # Step to checkout the repository