fix: bad response for holidays from caldav

cmd/domogeek/domogeek.go

@@ -73,11 +73,17 @@ type CalendarHandler struct{}
 
 func (c *CalendarHandler) ServeHTTP(w http.ResponseWriter, _ *http.Request) {
 	now := time.Now()
+	calDavHolidays, err := cal.IsHolidaysFromCaldav(now)
+	if err != nil {
+		zap.S().Warnf("unable to read holliday status from caldav: %v", err)
+		calDavHolidays = false
+	}
+
 	cd := CalendarDay{
 		Day:        now,
 		WorkingDay: cal.IsWorkingDay(now),
 		Ferie:      cal.IsHoliday(now),
-		Holiday:    cal.IsHoliday(now),
+		Holiday:    calDavHolidays,
 		Weekday:    cal.IsWeekDay(now),
 	}