[ci] Specified Python version as a string

Ref: actions/setup-python#160

Author: Aryamanz29

.github/workflows/pyatlan-pr.yaml

@@ -39,7 +39,9 @@ jobs:
       files: ${{ steps.distribute-integration-test-files.outputs.files }}
     strategy:
       matrix:
-        python-version: [3.8, 3.9, 3.10, 3.11, 3.12, 3.13]
+        # Specify version as a string
+        # https://github.com/actions/setup-python/issues/160"
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
       - name: Checkout code