Update cdk.yml

Author: HarshCasper

.github/workflows/cdk.yml

@@ -88,7 +88,7 @@ jobs:
 
       - name: Upload the Diagnostic Report
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: diagnose.json.gz
           path: ./diagnose.json.gz