Changes to POST /api/user/logout

added UserLogoutCreateValidationError to the response body oneOf list for the response status 400

added validation_error mapping keys to the response discriminator for the response status 400

added the media type application/json for the response with the status 200

added the non-success response with the status 404

added the non-success response with the status 400

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 405

added the non-success response with the status 406

added the non-success response with the status 415

added the non-success response with the status 500