OZG-3260 fix test

intelliform-adapter/src/test/java/de/itvsh/kop/eingangsadapter/intelliform/SemantikFormDataMapperTest.java

@@ -27,6 +27,7 @@ import static de.itvsh.kop.eingangsadapter.common.formdata.IncomingFileGroupTest
 import static org.assertj.core.api.Assertions.*;
 
 import java.io.IOException;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -59,13 +60,11 @@ class SemantikFormDataMapperTest {
 
 		@Test
 		void shouldRemoveFileReferences() {
-			var formData = mapToFormData(deposit);
-
-			formData.getFormData().put(FILE_REF1, Map.of(SemantikFormDataMapper.FILE, Map.of(ID, VENDOR_ID_XXX)));
+			Map<String, Object> formDataMap = new HashMap<>(Map.of(FILE_REF1, Map.of(SemantikFormDataMapper.FILE, Map.of(ID, VENDOR_ID_XXX))));
 
-			mapper.removeMappedFileReferences(FILE_GROUPS, formData.getFormData());
+			mapper.removeMappedFileReferences(FILE_GROUPS, formDataMap);
 
-			assertThat(formData.getFormData()).doesNotContainKey(FILE_REF1);
+			assertThat(formDataMap).doesNotContainKey(FILE_REF1);
 		}
 
 		@Nested