ci:调整 JDK 更新检测的定时任务

- 将定时任务的执行频率从每5 分钟调整为每小时的第 5 分钟
-优化资源使用，减少不必要的频繁检查

Author: fyjc-wlj

.github/workflows/update-jdk.yml

@@ -8,7 +8,7 @@ on:
     branches:
       - error-understand # 不需要每次推送执行，所以选择error-understand分支
   schedule:
-    - cron: '*/5 * * * *' # https://help.github.com/en/actions/automating-your-workflow-with-github-actions/events-that-trigger-workflows#scheduled-events-schedule
+    - cron: '5 * * * *' # https://help.github.com/en/actions/automating-your-workflow-with-github-actions/events-that-trigger-workflows#scheduled-events-schedule
 
 # on:
 #   schedule: