Ensure the python version is a string. (#19307)

Author: karthiknadig

.github/workflows/build.yml

@@ -10,7 +10,7 @@ on:
 
 env:
   NODE_VERSION: 14.18.2
-  PYTHON_VERSION: 3.10
+  PYTHON_VERSION: '3.10' # YML treats 3.10 the number as 3.1, so quotes around 3.10
   # Force a path with spaces and to test extension works in these scenarios
   # Unicode characters are causing 2.7 failures so skip that for now.
   special-working-directory: './path with spaces'