OZG-7515 code review comment

vorgang-manager-server/src/test/java/de/ozgcloud/vorgang/common/migration/M014_AddItemNameBescheidToPatchAttachedItemCommandITCase.java

@@ -87,13 +87,13 @@ class M014_AddItemNameBescheidToPatchAttachedItemCommandITCase {
 	}
 
 	private Document savePatchAttachedItemSubCommand(ObjectId id) {
-		Map<String, Object> itemBody = Map.of(PARENT_ID_FIELD, id.toString());
+		var itemBody = Map.<String, Object>of(PARENT_ID_FIELD, id.toString());
 		var command = CommandDocumentTestFactory.createWithOrderAndBody(PATCH_ATTACHED_ITEM_ORDER, itemBody);
 		return migrationDbTestUtils.saveCommand(command);
 	}
 
 	private Document saveOtherSubCommand(ObjectId id) {
-		Map<String, Object> itemBody = Map.of(PARENT_ID_FIELD, id.toString());
+		var itemBody = Map.<String, Object>of(PARENT_ID_FIELD, id.toString());
 		var command = CommandDocumentTestFactory.createWithBody(itemBody);
 		return migrationDbTestUtils.saveCommand(command);
 	}