Add changelog to github actions

Author: Inbal Tako

.github/workflows/publish.yml

@@ -35,6 +35,10 @@ jobs:
       run: |
         python setup.py sdist bdist_wheel
         twine upload dist/*
+    - name: Create changelog
+      uses: heinrichreimer/github-changelog-generator-action@v2.1.1
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
 
     - name: Notify slack success
       if: success()