[RESULT] [VOTE] Release Apache Druid 0.21.1 [RC2]

[Clint Wylie]

Thanks to everyone who participated in the vote! The vote has passed with 3
binding +1s and 1 non-binding +1.

Clint Wylie: +1 (binding)
Frank Chen: +1 (non-binding)
Jihoon Son: +1 (binding)
Jon Wei: +1 (binding)