Update CHANGELOG.md

Co-authored-by: Malte Sander <malte.sander.it@gmail.com>

Author: sbernauer

CHANGELOG.md

@@ -9,7 +9,7 @@ All notable changes to this project will be documented in this file.
 - Support objectOverrides using `.spec.objectOverrides`.
   See [objectOverrides concepts page](https://docs.stackable.tech/home/nightly/concepts/overrides/#object-overrides) for details ([#885]).
 - Enable the [restart-controller](https://docs.stackable.tech/home/nightly/commons-operator/restarter/), so that the Pods are automatically restarted on config changes ([#888]).
-- Added support for `2.6.0` ([#893]).
+- Added support for `2.7.2` ([#893]).
 
 ### Removed