notify slack on failure

.github/workflows/slack_notify.yml

@@ -7,10 +7,10 @@ on:
 
 jobs:
   send_notification:
-    if: ${{ failure() }}
     runs-on: ubuntu-latest
     steps:
-      - name: Send Slack notification
+      - name: Notify on Backend Tests failure
+        if: ${{ github.event.workflow_run.conclusion != 'success' }}
         run: |
           curl -X POST -H 'Content-type: application/json' \
           --data '{"text":"Workflow <${{ github.event.workflow_run.html_url }}|${{ github.event.workflow.name }}> failed!"}' \