Changes to Cancel Postcard

added the optional property from/allOf[#/components/schemas/Contact]/secret to the response with the 200 status

added the optional property to/allOf[#/components/schemas/Contact]/secret to the response with the 200 status

added PostcardPremiumPaperID to the paper response property allOf list for the response status 200

removed PremiumPaperID from the paper response property allOf list for the response status 200

the paper response's property default value standard was removed for the status 200

added the new internal_server_error enum value to the error/type response property for the response status 500

added the new not_found_error enum value to the error/type response property for the response status 404

added the new rate_limit_exceeded_error enum value to the error/type response property for the response status 429

added subschema #1 subschema #2 to the response body anyOf list for the response status 401

removed subschema #1 subschema #2 from the response body anyOf list for the response status 401

added the optional property paper to the response with the 200 status