fix: Compatibility with older airflow versions in dag tests #303

Job	Run time
Test on Python 3.13 and Airflow 3.1.5 and dbt 1.11.2	9m 16s
Test on Python 3.12 and Airflow 3.0.6 and dbt 1.11.2	9m 14s
Test on Python 3.12 and Airflow 3.1.5 and dbt 1.11.2	10m 49s
Test on Python 3.12 and Airflow 3.1.5 and dbt 1.10.17	10m 43s
Test on Python 3.11 and Airflow 3.1.5 and dbt 1.10.17	8m 54s
Test on Python 3.11 and Airflow 3.0.6 and dbt 1.11.2	7m 46s
Test on Python 3.11 and Airflow 3.0.6 and dbt 1.10.17	7m 57s
Test on Python 3.12 and Airflow 3.0.6 and dbt 1.10.17	8m 4s
Test on Python 3.11 and Airflow 3.1.5 and dbt 1.11.2	8m 31s
Test on Python 3.13 and Airflow 3.1.5 and dbt 1.10.17	9m 15s
Test on Python 3.10 and Airflow 3.1.5 and dbt 1.11.2	9m 49s
Test on Python 3.10 and Airflow 3.0.6 and dbt 1.11.2	8m 24s
Test on Python 3.10 and Airflow 3.0.6 and dbt 1.10.17	8m 17s
Test on Python 3.10 and Airflow 3.1.5 and dbt 1.10.17	9m 35s
Combine and check coverage	15s
release	0s
	2h 6m 49s

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