Change migration

migrations/20230903131153_reminder_status_timing.sql

@@ -1,4 +1,4 @@
 ALTER TABLE reminders ADD COLUMN `status_change_time` DATETIME;
 
 -- This is a best-guess as to the status change time.
-UPDATE reminders SET `status_change_time` = `utc_time`;
+UPDATE reminders SET `status_change_time` = `utc_time` WHERE `status` != 'pending';