CustomDomainVerificationResponse is missing a property for the cname_api_key

[tmschlot]

Checklist

• I have looked into the Readme and have not found a suitable solution or answer.
• I have looked into the API documentation and have not found a suitable solution or answer.
• I have searched the issues and have not found a suitable solution or answer.
• I have searched the Auth0 Community forums and have not found a suitable solution or answer.
• I agree to the terms within the Auth0 Code of Conduct.

Description

When attempting to verify a custom domain with self-managed certificates using the Management API, the SDK fails to return the cname_api_key value. You can only get this value at the time of verification, so it should be included in the CustomDomainVerificationResponse.

I propose adding a CnameApiKey -- or similarly-named -- property to that response that maps to the cname_api_key in the HTTP response.

Management API documentation Verify a custom domain Response Schema

Reproduction

1. Create a custom domain using self_managed_certs.
2. Create the DNS verification record.
3. Verify the custom domain using the SDK, and there is no way to get the cname_api_key.

Additional context

No response

auth0.net version

7.30.0

.NET version

8