Changes to Get My Subscription Payment Orders

added the optional property docs/items/fecha_notificacion_proximo_pago to the response with the 200 status

added the optional property docs/items/historial_notificaciones to the response with the 200 status

added the optional property docs/items/usuario_creador_id to the response with the 200 status

added the required property docs/items/archivo_pdf to the response with the 200 status

added the optional property docs/items/respuestas_facturacion to the response with the 200 status