Changes to Cancel payout

the response property description became nullable for the status 200

the endpoint scheme security oAuth was removed from the API

added the non-success response with the status 429

the response property amount became nullable for the status 200

the amount response's property type changed from no type to object null for status 200

removed amount-nullable from the amount response property allOf list for the response status 200

added the required property amount/currency to the response with the 200 status

added the required property amount/value to the response with the 200 status

endpoint added