Run GitHub Action only on release

Author: dinvlad

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

@@ -1,9 +1,6 @@
 name: Publish Python 🐍 distributions 📦 to PyPI and TestPyPI
 
 on:
-  push:
-    branches:
-    - master
   release:
     types:
     - published