Refactor deploy step to use environment variable for webhook

.github/workflows/amplify-deploy.yml

@@ -34,9 +34,10 @@ jobs:
   # Deployment (Only runs if 'test' passes)
   deploy:
     runs-on: ubuntu-latest
-    needs: test
-    if: github.event_name == 'push' 
 
     steps:
-      - name: Trigger Amplify Webhook
-        run: curl -X POST -d {} "${{ secrets.AMPLIFY_WEBHOOK_URL }}"
+      - name: Trigger webhook using curl
+        env:
+          WEBHOOK_URL: ${{ secrets.AMPLIFY_WEBHOOK_URL }}
+        run: |
+          curl -X POST -H "Content-Type: application/json" -d '{}' "$WEBHOOK_URL"