Bumps [apache-airflow](https://github.com/apache/airflow) from 2.1.0 to 2.1.2.
- [Release notes](https://github.com/apache/airflow/releases)
- [Changelog](https://github.com/apache/airflow/blob/main/CHANGELOG.txt)
- [Commits](https://github.com/apache/airflow/compare/2.1.0...2.1.2

)

---
updated-dependencies:
- dependency-name: apache-airflow
  dependency-type: direct:production
...

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