interface Deno.CronSchedule
          
Unstable
CronSchedule is the interface used for JSON format
cron schedule.
optional
minute: CronScheduleExpression
      
    optional
hour: CronScheduleExpression
      
    optional
dayOfMonth: CronScheduleExpression
      
    optional
month: CronScheduleExpression
      
    optional
dayOfWeek: CronScheduleExpression