ci: fix notification failure condition (#243)

Author: jprieto92

.github/workflows/ci-scheduled-tests.yml

@@ -40,7 +40,7 @@ jobs:
 
   slackNotification:
     needs: test
-    if: needs.test.result == 'failed'
+    if: ${{ failure() }}
     name: Slack Notification
     runs-on: ubuntu-latest
     steps: