Extend Helm chart CHANGELOG with new revisionHistoryLimit feature

Signed-off-by: Arnold Bechtoldt <[email protected]>

Author: arnisoph

charts/external-dns/CHANGELOG.md

@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Added the option to explicitly enable or disable service account token automounting. ([#3983](https://github.com/kubernetes-sigs/external-dns/pull/3983)) [@gilles-gosuin](https://github.com/gilles-gosuin)
+- Allow to configure revisionHistoryLimit on the K8s Deployment resource. ([#4008](https://github.com/kubernetes-sigs/external-dns/pull/4008)) [@arnisoph](https://github.com/arnisoph)
 
 ## [v1.13.1] - 2023-09-07