Changes to List sessions

added the required property error_code to the response with the 401 status

added the required property error_code to the response with the 403 status

added the required property error_code to the response with the 404 status

added the required property error_code to the response with the 409 status

added the required property error_code to the response with the 422 status

added the required property error_code to the response with the 429 status

added the required property error_code to the response with the 500 status

the endpoint scheme security serviceAccount was added to the API

the security scope sessions:read was removed from the endpoint's security scheme oauth2

the endpoint scheme security bearerAuth was added to the API

the endpoint scheme security oauth2 was added to the API

endpoint added