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

Co-authored-by: Madhavan <msmygit@users.noreply.github.com>
diff --git a/.github/workflows/snyk-pr-cleanup.yml b/.github/workflows/snyk-pr-cleanup.yml
index e686619..9c3136b 100644
--- a/.github/workflows/snyk-pr-cleanup.yml
+++ b/.github/workflows/snyk-pr-cleanup.yml
@@ -5,7 +5,7 @@
     types:
       - closed
     branches:
-      -  4.x
+      - 4.x
   workflow_dispatch:
 
 jobs: