fix: schedule prepare ones in year

.github/workflows/schedule-prepare.yml

@@ -2,7 +2,7 @@ name: Ship js Schedule Prepare
 on:
  schedule:
  # * is a special character in YAML so you have to quote this string
- - cron: '*/15 * * * *'
+ - cron: '0 0 31 12 *'
 jobs:
  schedule_prepare:
  runs-on: Ubuntu-latest