Update python-app.yml

Author: priyagupta108

.github/workflows/python-app.yml

@@ -9,8 +9,8 @@ jobs:
       matrix:
         python-version: ['3.13', '3.12', '3.9', '3.10', '3.11', '3.8']
 
-    # env:
-    #   PIP_NO_PYTHON_VERSION_WARNING: 1
+    env:
+      PIP_NO_PYTHON_VERSION_WARNING: 1
 
     steps:
     - name: Checkout repository