Changes to List artifact versions

removed the ASYNCAPI enum value from the versions/items/type response property for the response status 200

removed the AVRO enum value from the versions/items/type response property for the response status 200

removed the GRAPHQL enum value from the versions/items/type response property for the response status 200

removed the JSON enum value from the versions/items/type response property for the response status 200

removed the KCONNECT enum value from the versions/items/type response property for the response status 200

removed the OPENAPI enum value from the versions/items/type response property for the response status 200

removed the PROTOBUF enum value from the versions/items/type response property for the response status 200

removed the WSDL enum value from the versions/items/type response property for the response status 200

removed the XML enum value from the versions/items/type response property for the response status 200

removed the XSD enum value from the versions/items/type response property for the response status 200

added the required property versions/items/references to the response with the 200 status

removed the PROTOBUF_FD enum value from the versions/items/type response property for the response status 200

the versions/items/version response's property type changed from integer to string, and format from int64 to no format for status 200