Kontres PUT (PATCH) validation is broken

[MindChirp]

What happened?

I've applied a band aid to the problem now, but the validation does not take into account cases where a booking has its date and booking state changed at the same time. By doing this as an admin, one can theoretically bypass any restrictions on overlapping reservations.

The code in question can be fond in the reservation serializer (ca. line 141)

Which users are seeing the problem?

Superadmins (Index), Admins (HS)

Relevant log output

No response