Update .github/workflows/snyk-pr-cleanup.yml

Co-authored-by: Madhavan <msmygit@users.noreply.github.com>

Author: chrislin22

.github/workflows/snyk-pr-cleanup.yml

@@ -5,7 +5,7 @@ on:
     types:
       - closed
     branches:
-      -  4.x
+      - 4.x
   workflow_dispatch:
 
 jobs: