Update CHANGELOG.md

Author: VolkerHartmann

CHANGELOG.md

@@ -7,9 +7,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### Added
-* Enhanced searching capabilities for related identifiers with new methods in the RelatedIdentifierSpec class.
-* Comprehensive unit tests added for the RelatedIdentifierSpec class to ensure robust functionality.
-* Improved error messaging for missing publisher during updates in the DataResourceService.
 
 ### Fixed
 
@@ -56,10 +53,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Deprecated
 
 ### Removed
-* Fixed issue with privileged find for state 'REVOKED'
+* Removed outdated configuration for GitHub Actions in the project setup.
 
 ### Security
-* Removed outdated configuration for GitHub Actions in the project setup.
 
 ## [1.2.2] - 2024-04-02