Change test workflow to trigger on tags instead of branch push

Author: Harvish N S

.github/workflows/test-pypi-publish.yml

@@ -3,8 +3,8 @@ name: Test PyPI Publishing
 on:
   workflow_dispatch:
   push:
-    branches:
-      - release-actions
+    tags:
+      - 'v*'
 
 permissions: {}