Reduce cron frequence to not spam actions

.github/workflows/stale.yml

@@ -1,7 +1,7 @@
 name: 'Close stale issues'
 on:
     schedule:
-        -   cron: '* */2 * * *'
+        -   cron: '0 0 * * *'
 
 jobs:
     stale: