Changes to Check registrant change requirements

the request property contact_id became required

the request property domain_id became required

the response property data became required for the status 200

the response property data/extended_attributes/items/description became required for the status 200

the response property data/extended_attributes/items/name became required for the status 200

the response property data/extended_attributes/items/options became required for the status 200

the response property data/extended_attributes/items/options/items/description became required for the status 200

the response property data/extended_attributes/items/options/items/title became required for the status 200

the response property data/extended_attributes/items/options/items/value became required for the status 200

the response property data/extended_attributes/items/required became required for the status 200

the response property errors became required for the status 400

the response property message became required for the status 400

added the required property data/extended_attributes/items/title to the response with the 200 status

endpoint added

api path removed without deprecation