Update CHANGELOG.md

Author: pwrdeli

CHANGELOG.md

@@ -7,8 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.5.0](https://github.com/cloudogu/gitops-build-lib/releases/tag/0.5.0) - 2023-05-03
+
 ### Added
-- Make `deployments.plain` work with `CronJob 
+- Make `deployments.plain` work with `CronJob` 
 
 ## [0.4.0](https://github.com/cloudogu/gitops-build-lib/releases/tag/0.4.0) - 2023-03-21