Changes to Criar combo de produtos

the created_at response's property type changed from string to object, and format from date-time to no format for status 201

the end_at/date response's property format changed from date-time to no format for status 201

the start_at/date response's property format changed from date-time to no format for status 201

the updated_at response's property type changed from string to object, and format from date-time to no format for status 201

added the optional property created_at/date to the response with the 201 status

added the optional property created_at/timezone to the response with the 201 status

added the optional property created_at/timezone_type to the response with the 201 status

added the optional property updated_at/date to the response with the 201 status

added the optional property updated_at/timezone to the response with the 201 status

added the optional property updated_at/timezone_type to the response with the 201 status

the response optional property created_at became not read-only for the status 201

the response optional property updated_at became not read-only for the status 201