Update python-app.yml

filter on .py files

Author: jaklke

.github/workflows/python-app.yml

@@ -6,8 +6,12 @@ name: Python application
 on:
   push:
     branches: [ "main" ]
+    paths:
+      - '**.py'
   pull_request:
     branches: [ "main" ]
+    paths:
+      - '**.py'
 
 permissions:
   contents: read