prj42 fix test after inserting update

pluto-server/src/test/java/de/itvsh/ozg/pluto/command/PersistPostfachMailByCommandServiceTest.java

@@ -132,7 +132,7 @@ class PersistPostfachMailByCommandServiceTest {
 		}
 
 		private CreateCommandRequest callService() {
-			service.persistNachricht(Optional.of(UserTestFactory.ID), PostfachNachrichtTestFactory.create());
+			service.persistNachricht(Optional.of(UserTestFactory.ID), PostfachNachrichtTestFactory.createBuilder().id(null).build());
 			verify(commandService).createCommand(requestCaptor.capture());
 
 			return requestCaptor.getValue();