Update CHANGELOG.md from release 23.11.0 (#643)

Author: maltesander

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [23.11.0] - 2023-11-24
+
 ### Added
 
 - Default stackableVersion to operator version. It is recommended to remove `spec.image.stackableVersion` from your custom resources ([#611], [#613]).