Chore: 업데이트 워크플로우 시간에 UTC 적용

Author: wgwjh05169

.github/workflows/update.yml

@@ -5,10 +5,10 @@ name: Update table CI
 
 on:
   schedule:
-    - cron: '0 0 * * *'
-    - cron: '0 7 * * *'
-    - cron: '30 12 * * *'
-    - cron: '10 18 * * *'
+    - cron: '0 15 * * *'
+    - cron: '0 22 * * *'
+    - cron: '30 3 * * *'
+    - cron: '10 9 * * *'
   workflow_dispatch:
 
 jobs: