reverts to on-release publish

Author: mmschlk

.github/workflows/python-publish.yml

@@ -9,9 +9,9 @@
 name: Upload Python Package
 
 on:
-  push:
-    branches:
-      - main
+  release:
+    types: [published]
+    branches: [main]
 
 permissions:
   contents: read