Send Slack notification on Deployment from Github Action

.github/workflows/heroku-deployment.yml

@@ -16,3 +16,17 @@ jobs:
           heroku_api_key: ${{ secrets.HEROKU_API_KEY }}
           heroku_app_name: ${{ secrets.HEROKU_APP_NAME }}
           heroku_email: ${{ secrets.HEROKU_EMAIL }}
+
+  slackNotification:
+    name: Slack Notification
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Slack Notification
+        uses: rtCamp/action-slack-notify@v2
+        env:
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
+          # SLACK_COLOR: ${{ job.status }} # or a specific color like 'good' or '#ff00ff'
+          # SLACK_ICON: https://github.com/rtCamp.png?size=48
+          # SLACK_MESSAGE: 'Post Content :rocket:'
+          # SLACK_TITLE: Post Title