Not possible to up domains buy .com from the UK

## Prerequisites

* [x] I am running the latest version. (`up upgrade`)
* [x] I searched to see if the issue already exists.
* [x] I inspected the verbose debug output with the `-v, --verbose` flag.
* [x] Are you an Up Pro subscriber?

## Description

Attempting to purchase a .com domain fails in the UK with Error: purchasing: TLDRulesViolation: [ADMIN.STATE: 'state' is not required for United Kingdom, and should not be set, OWNER.STATE: 'state' is not required for United Kingdom, and should not be set, TECH.STATE: 'state' is not required for United Kingdom, and should not be set, BILL.STATE: 'state' is not required for United Kingdom, and should not be set]

Up does not allow state to be omitted

## Steps to Reproduce

Complete up domains buy interactive form, adding GB as country code