Token expiration not handled in long-running Airflow DAGs

### Token expiration not handled in long-running Airflow DAGs

**Description**  
In Airflow DAGs, token expires and SDK does not refresh automatically.

**Code snippet**

    from airflow import DAG

    client = Client("token")

    def task():
        client.request("GET", base_url, "/advance")

**Expected behavior**  
Automatic token refresh or helper method.