Run once at 6 instead of every minute between 6-7

[skip ci]

Author: Stefterv

.github/workflows/lock.yml

@@ -2,7 +2,7 @@ name: 'Lock Threads'
 
 on:
   schedule:
-    - cron: '* 6 * * *'
+    - cron: '0 6 * * *'
 
 permissions:
   contents: read