NO-ISSUE Migrate renovate config

Author: Yang-33

renovate.json5

@@ -19,6 +19,10 @@
         'dependency upgrade',
         'line-openapi-update',
       ],
+      // In many cases, we would like to update line-openapi by dispatching the GitHub workflow during working
+      // hours, as there are code changes.
+      // If that is forgotten, there's a possibility that line-openapi updates or code changes won't happen at
+      // all, so we allow it to run at night just in case.
       schedule: [
         'after 11pm',
         'before 4am',