Add error handling

Author: SmartManoj

.github/workflows/close-parent.yml

@@ -14,6 +14,7 @@ jobs:
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
+          set -e
           # Get the closed issue's number
           issue_number=${{ github.event.issue.number }}
           owner=${{ github.repository_owner }}