put https://api-preview.platform.breadpayments.com/api/buyer//contact/
Allows a user to update an existing buyer's contact at the provided buyer ID and contact ID pair.
Updates to a buyer's primary contact name, phone, and email must be done through the update buyer endpoint.
Upon success, the details of the updated contact will be returned.
Non-existent buyer and contact IDs will return 404 Not Found. Out of scope buyer IDs will return 401 Unauthorized.