fix unit tests

tests/Unit/Service/Dolibarr/DolibarrSyncServiceTest.php

@@ -54,7 +54,7 @@ class TestableDolibarrSyncService extends DolibarrSyncService {
     public function getPersonContact(Person $person): ?ContactPoint { return parent::getPersonContact($person); }
     public function formatContactPosition(array $missions, ?string $gender = 'X'): string { return parent::formatContactPosition($missions, $gender); }
     public function formatPhoneNumber(PhoneNumber $phoneNumber): string { return parent::formatPhoneNumber($phoneNumber); }
-    public function getExpectedTagsFor(Organization $organization) { return parent::getExpectedTagsFor($organization); }
+    public function getExpectedTagsFor(Organization $organization): array { return parent::getExpectedTagsFor($organization); }
     public function validateResponse(ResponseInterface $response, BaseRestOperation $operation): void { parent::validateResponse($response, $operation); }
 }