💚 Fix git for heroku deployment

.circleci/config.yml

@@ -51,6 +51,7 @@ jobs:
       - run:
           name: Deploy to heroku
           command: |
+            git config --global push.default matching
             git push https://heroku:$HEROKU_API_KEY@git.heroku.com/$HEROKU_APP_NAME.herokuapp.com 
       - run:
           name: Smoke test