feat(airflow): drop Airflow < 2.3 support + make plugin v2 the defaul… #7766

Job	Run time
airflow-plugin (3.8, apache-airflow~=2.3.4, test-airflow23)	7m 41s
event-file	4s
airflow-plugin (3.10, apache-airflow~=2.4.3, test-airflow24)	10m 31s
airflow-plugin (3.10, apache-airflow~=2.6.3 -c https://raw.githubusercontent.com/apache/airflow/c...	10m 56s
airflow-plugin (3.10, apache-airflow~=2.7.3 -c https://raw.githubusercontent.com/apache/airflow/c...	10m 55s
airflow-plugin (3.10, apache-airflow~=2.8.1 -c https://raw.githubusercontent.com/apache/airflow/c...	10m 56s
airflow-plugin (3.11, apache-airflow~=2.9.3 -c https://raw.githubusercontent.com/apache/airflow/c...	10m 53s
airflow-plugin (3.11, apache-airflow~=2.10.3 -c https://raw.githubusercontent.com/apache/airflow/...	10m 55s
	1h 12m 51s

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