fix(ci): Fix Bazel failure Slack message in agw-workflow (#13005)

Signed-off-by: Krisztián Varga <krisztian.varga@tngtech.com>

.github/workflows/agw-workflow.yml

@@ -433,7 +433,7 @@ jobs:
           echo "Available storage:"
           df -h
       - name: Notify Bazel failure to slack
-        if: steps.bazel-codecoverage.outcome=='failure' && github.event_name == 'push'
+        if: failure() && steps.bazel-codecoverage.conclusion == 'failure' && github.event_name == 'push'
         uses: rtCamp/action-slack-notify@v2.2.0
         env:
           SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_BAZEL_CI }}