Release v2.5.4

Spring boot 3 2 2 (#252)

* feat: upgrade spring-boot-starter-parent to 3.2.2

* fix: handle HandlerMethodValidationException due to changed Exception-Handling

* feat: initialize localized error-messages

* chore: fix error messages in Integration tests

* chore: fix Basenames

* chore: exclude config attribute from json

* chore: prepare 2.5.4

* chore: bump version to 2.5.4