[druid-user] [ANNOUNCE] Apache Druid 0.21.1 release

The Apache Druid team is proud to announce the release of Apache Druid 0.21.1. 
Druid is a high performance analytics data store for event-driven data.

Apache Druid 0.21.1 is a minor release to fix regressions introduced in 0.21.0.
Source and binary distributions can be downloaded from:
[https://druid.apache.org/downloads.html](https://druid.apache.org/downloads.html)

Release notes are at:
[https://github.com/apache/druid/releases/tag/druid-0.21.1](https://github.com/apache/druid/releases/tag/druid-0.21.1)

A big thank you to all the contributors that helped fixed the issues for this release!