Update the monthly pool tournament reminder to the last Saturday of every month.
[IN:UPDATE_REMINDER Update the [SL:RECURRING_DATE_TIME [IN:GET_RECURRING_DATE_TIME [SL:FREQUENCY monthly ] ] ] [SL:TODO pool tournament ] reminder [SL:RECURRING_DATE_TIME_NEW [IN:GET_RECURRING_DATE_TIME [SL:DATE_TIME to the last Saturday ] of [SL:FREQUENCY every month ] ] ] . ]