PlannedLessons are getting wrong start and endTimes

[finnmargraf]

When parsing a plannedLesson, the start and end date shouldn't be relative to the current date when parsing the plan, but using the actual date of the plan

indiware-api/src/parser/plannedLesson.ts

Lines 25 to 26 in eefbe15

	startTime: parseDate(xml.Beginn, 'HH:mm', new Date()),
	endTime: parseDate(xml.Ende, 'HH:mm', new Date()),