Revert "feat(schedule): change to run every hour"

This reverts commit d807504b6c.

vercel.json

@@ -1,6 +1,6 @@
 {
   "crons": [{
     "path": "/api/cron",
-    "schedule": "0 * * * *"
+    "schedule": "0 0 * * *"
   }]
-}
+}