feat: Change Date translation string

public/language/en-GB/modules.json

@@ -71,6 +71,7 @@
 	"composer.schedule-date": "Date",
 	"composer.schedule-time": "Time",
 	"composer.cancel-scheduling": "Cancel Scheduling",
+	"composer.change-schedule-date": "Change Date",
 	"composer.set-schedule-date": "Set Date",
 	"composer.discard-all-drafts": "Discard all drafts",
 	"composer.no-drafts": "You have no drafts",