OZG-4814 OZG-4840 Apply comments of review

pom.xml

...ud/admin/params/ConfigurationParameterRestRepository.java

...ava/de/ozgcloud/admin/params/ConfigurationParameters.java

src/main/java/de/ozgcloud/admin/params/ParamsConstants.java

src/test/java/de/ozgcloud/admin/ApiRootITCase.java

...test/java/de/ozgcloud/admin/dummy/DummyServiceITCase.java

src/test/java/de/ozgcloud/admin/dummy/DummyServiceTest.java

...gcloud/admin/params/ConfigurationParameterRestITCase.java

...ETA-INF/spring/org.mockito.junit.jupiter.MockitoExtension

src/test/resources/junit-platform.properties