docs(changelog): update changelog

CHANGELOG.md

@@ -4,6 +4,16 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## v4.0.3 - 2024-08-08
+
+### What's Changed
+
+#### 🐛 Bug Fixes
+
+* fix: resolving an error in the inheritance behaviour of `notification_configuration` and `team_access` (#61) @marwinbaumannsbp
+
+**Full Changelog**: https://github.com/schubergphilis/terraform-aws-mcaf-avm/compare/v4.0.2...v4.0.3
+
 ## v4.0.2 - 2024-08-07
 
 ### What's Changed