Changes to Update the role of a User or a Group on an Organization

added the pattern ^[a-z0-9](?:-?[a-z0-9]+)+$ to the path request parameter userId

the request property role became required

removed the optional property user from the response with the 200 status

added the media type application/json for the response with the status 404

added the non-success response with the status 403

added the optional property idp_id to the response with the 200 status