OZG-7324: Fix License Header

..._item/GrpcFindVorgangAttachedItemResponseTestFactory.java

...ched_item/GrpcVorgangAttachedItemResponseTestFactory.java

...ang/attached_item/GrpcVorgangAttachedItemTestFactory.java

...g/attached_item/VorgangAttachedItemRemoteServiceTest.java

...vorgang/attached_item/VorgangAttachedItemServiceTest.java

...vorgang/attached_item/VorgangAttachedItemTestFactory.java

...gcloud/collaboration/fachstelle/FachstelleMapperTest.java

...collaboration/fachstelle/FachstelleRemoteServiceTest.java

...cloud/collaboration/fachstelle/FachstelleServiceTest.java

...cloud/collaboration/fachstelle/FachstelleTestFactory.java

...ation/fachstelle/GrpcFachstelleGetRequestTestFactory.java

...tion/fachstelle/GrpcFachstelleGetResponseTestFactory.java

...d/collaboration/fachstelle/GrpcFachstelleTestFactory.java

...stelle/GrpcOrganisationsEinheitGetRequestTestFactory.java

...telle/GrpcOrganisationsEinheitGetResponseTestFactory.java

...ation/fachstelle/GrpcOrganisationsEinheitTestFactory.java

...boration/request/CollaborationRequestGrpcServiceTest.java

...ollaboration/request/CollaborationRequestServiceTest.java

...equest/GrpcCreateCollaborationRequestDataTestFactory.java

...aboration/request/GrpcFindRequestsRequestTestFactory.java