Announce Apache Airflow 2.3.1 (#602)

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 **Note:** Follow [@ApacheAirflow](https://twitter.com/ApacheAirflow) on Twitter for the latest news and announcements!
 
+# May 25, 2022
+
+We’ve just released Apache **Airflow 2.3.1**.
+
+đŸ“Ļ PyPI: https://pypi.org/project/apache-airflow/2.3.1/ \
+📚 Docs: https://airflow.apache.org/docs/apache-airflow/2.3.1 \
+🛠ī¸ Changelog: https://airflow.apache.org/docs/apache-airflow/2.3.1/release_notes.html \
+đŸĒļ Sources: https://airflow.apache.org/docs/apache-airflow/2.3.1/installation/installing-from-sources.html
+
 # May 20, 2022
 
 We've just released Apache **Airflow Helm chart 1.6.0**.