Wrong validation for Zip-code field.

[alinadivante]

1. Log in into Vuestorefront
2. Go to My Account→ My shipping details
3. Edit your shipping details
4. Type three letters into Zip-code and try to save changes

Actual results:
Wrong validation.

Expected:
It should be possible saving three letters or notification should be changed (for example "Zip-code must have at least 5 signs"

[ibugaj]

@pkarw Could you reopen this issue?
I find new place where Zip-code is valid, even when user provided 4 letters, see:

It is for logged user, when user edit My profil - /my-account page

Tested on https://test.storefrontcloud.io

[pkarw]

@ibugaj thanks