chore: fix stub

Author: loichenninger

src/test/java/fr/insee/genesis/stubs/LunaticJsonRawDataPersistanceStub.java

@@ -19,6 +19,7 @@
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -229,7 +230,7 @@ public Set<String> findUnprocessedInterrogationIdsByCollectionInstrumentId(Strin
                        lunaticJsonDataDocument -> lunaticJsonDataDocument.processDate() == null
                        && lunaticJsonDataDocument.questionnaireId().equals(collectionInstrumentId)
                ).toList();
-       Set<String> interrogationIds = new HashSet<>();
+       Set<String> interrogationIds = new LinkedHashSet<>();
        unprocessedDocuments.forEach(doc -> interrogationIds.add(doc.interrogationId()));
        return interrogationIds;
     }