fix: IsPostalCode does not recognize Cayman Islands

[mjrichards91]

Description

Postal codes in the Cayman Islands return as invalid, i.e. KY1-1108. It doesn't seem like the locale KY is supported.

Minimal code-snippet showcasing the problem

@IsPostalCode('any')
postalCode: string

Expected behavior

Validation to be successful.

Actual behavior

Validation fails with the message "postalCode must be a postal code".

[NoNameProvided]

Our postal code validation (as many other operators) is simply a call through to https://github.com/validatorjs/validator.js. After a quick look at the code and search on Google, it seems not all countries as supported and the KY code for the Cayman Islands is not present in the PostalCodeLocale type.

There is an open discussion about adding support for additional countries in validator.js here: validatorjs/validator.js#722.

Closing this as invalid because the issue is in an upstream library.

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.