Update check-pr.yml

.github/workflows/check-pr.yml

@@ -80,3 +80,27 @@ jobs:
               sleep 120
             fi
           done
+
+  notify-slack-on-failure:
+    needs: wait-for-repo2
+    if: failure()
+    runs-on: ubuntu-latest
+    steps:
+      - name: Send Slack notification
+        run: |
+          # Determine the branch name based on the event type
+          if [ "$EVENT_NAME" == "repository_dispatch" ]; then
+            BRANCH_NAME=$OPENRPC_PR_BRANCH
+          elif [ "$EVENT_NAME" == "pull_request" ]; then
+            BRANCH_NAME=$PR_HEAD_REF
+          elif [ "$EVENT_NAME" == "push" ]; then
+            BRANCH_NAME=${GITHUB_REF#refs/heads/}  # Extract branch name from GITHUB_REF for push events
+          else
+            BRANCH_NAME="unknown"
+          fi
+          
+          # Send the Slack notification with the branch name
+          curl -X POST -H 'Content-type: application/json' \
+          --data '{"text": "Failed to generate SDK artifact with the latest changes in the Branch: '$BRANCH_NAME'."}' \
+          ${{ secrets.SLACK_WEBHOOK_URL }}
+