Sync upstream every 6 hours instead of daily

Author: itwizardo

.github/workflows/upstream-sync.yml

@@ -2,7 +2,7 @@ name: Sync Upstream
 
 on:
   schedule:
-    - cron: '0 6 * * *'  # Daily at 6 AM UTC
+    - cron: '0 */6 * * *'  # Every 6 hours
   workflow_dispatch:
 
 jobs: