Airflow 2.2.1 is released

[Jed Cunningham <je...@astronomer.io.INVALID>]

Dear Airflow community,

I'm happy to announce that Airflow 2.2.1 was just released.

The released sources and packages can be downloaded via
https://airflow.apache.org/docs/apache-airflow/stable/installation/installing-from-sources.html

Other installation methods are described in
https://airflow.apache.org/docs/apache-airflow/stable/installation/

We also made this version available on PyPI for convenience:
`pip install apache-airflow`
https://pypi.org/project/apache-airflow/2.2.1/

The documentation is available on:
https://airflow.apache.org/
https://airflow.apache.org/docs/apache-airflow/2.2.1/

Find the CHANGELOG here for more details:
https://airflow.apache.org/docs/apache-airflow/2.2.1/changelog.html

Container images are published at:
https://hub.docker.com/r/apache/airflow/tags/?page=1&name=2.2.1

Thanks,
Jed