[spike] Investigate support for TaskFlowAPI in kedro-airflow

[noklam]

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Since Airflow 2.0, a simpler TaskFlowAPI for DAGs is released as an alternative with the Operator API. At the moment kedro-airflow supports the Operator, but it's good to keep an eye on it. https://airflow.apache.org/docs/apache-airflow/stable/tutorial_taskflow_api.html

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