UpdatedDate and new HASL v3 doesn't work

[stenleo]

lovelace-hasl-departure-card/dist/hasl-departure-card.js

Line 53 in fe5d2bc

var updatedDate = new Date(entity_data.last_updated);

Hi!

Noted an issue with this card related to the new departure sensors in HASLv3. This card uses the last_updated state attribute but that seems to be triggered frequently even if the data is actually not refreshed. I am not sure if this is something new with v3 but I'm guessing it has something to do with it caching the reponses.

I changed this in my on version to use the attribute last_refresh instead which gives the behavior we want.