Changes to Accept organization invitation

added the optional property message to the response with the 400 status

the endpoint scheme security bearerAuth was added to the API

added the optional property capability to the response with the 400 status

the invitationId response's property pattern ^inv_.* was removed for the status 200

the organizationId response's property pattern ^org_.* was removed for the status 200

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

removed the required property allowedEmailDomains from the response with the 409 status

removed the required property emailDomain from the response with the 409 status

removed the required property error from the response with the 409 status

removed the required property message from the response with the 409 status

added AccountEmailDomainNotAllowedError ScimDeprovisionedError to the response body anyOf list for the response status 409