Update CI to upload package when a release is created

Author: Jaipreet Singh

.github/workflows/python-publish.yml

@@ -1,12 +1,11 @@
-# This workflows will upload a Python Package when a tagged commit is pushed to the master branch.
+# This workflows will upload a Python Package when release is created from GitHub.
 # For more information see: https://help.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions#publishing-to-package-registries
 
 name: Upload Python Package
 
 on:
-  push:
-    branches:
-      - master
+  release:
+    types: [created]
 
 jobs:
   deploy:
@@ -27,7 +26,6 @@ jobs:
       run: |
         python setup.py sdist
     - name: Publish package
-      if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
       uses: pypa/gh-action-pypi-publish@master
       with:
         user: __token__