v6.2.1 CHANGELOG

(cherry picked from commit 793c8d5)

Author: lukebakken

CHANGELOG.md

@@ -1,3 +1,9 @@
+## Changes Between 6.2.0 and 6.2.1
+
+6.2.0 was published incorrectly, resulting in version 6.2.1
+
+GitHub milestone: [`6.2.1`](https://github.com/rabbitmq/rabbitmq-dotnet-client/milestone/50?closed=1).
+
 ## Changes Between 6.1.0 and 6.2.0
 
 A full list of changes can be found in the GitHub milestone: [`6.2.0`](https://github.com/rabbitmq/rabbitmq-dotnet-client/milestone/49?closed=1).