How to get user role via OpenID Connect?

I Create OIDC configuration for AirFlow that allows GitLab to be used as an Identity Provide. I want to get user role on the Gitlab for setting the same role on the Airflow, e.g. if user is Admin on the Gitlab he will be Admin on the Airflow. I found out that at the users Gitlab api endpoint only admins have access to the “is_admin” field