Changes to Place a real voice call via Sierra

added the new optional request property caller_id_number

the request property subscriber_id became optional

the subscriber_id request property default value was added

the response's body type changed from no type to object for status 409

removed the required property error from the response with the 202 status

removed IdempotencyKeyReusedResponse RequestInProgressResponse from the response body anyOf list for the response status 409

added the optional property error to the response with the 409 status

the status response property const value queued was added for the status 202

removed the dispatched enum value from the status response property for the response status 202

removed the failed enum value from the status response property for the response status 202

endpoint added