Bump min version of jinja2 (#26866)
Bump min version of jinja2 (#26866)

We use the `dumps` kwarg, which was added in 3.0 of jinja2.
nathanielvarona/airflow,nathanielvarona/airflow,nathanielvarona/airflow,apache/airflow,apache/airflow,nathanielvarona/airflow,nathanielvarona/airflow,apache/airflow,apache/airflow,nathanielvarona/airflow,apache/airflow,apache/airflow