update unit test expectation

Author: mKowalski256

src/test/java/com/researchspace/api/v1/controller/SamplesApiControllerMVCIT.java

@@ -848,7 +848,7 @@ public void deleteSampleAndCheckActions() throws Exception {
     verifyAuditAction(AuditAction.CREATE, 3);
 
     // move subsample to container
-    moveSubSampleIntoListContainer(subSample.getId(), basicContainer.getId(), anyUser);
+    subSample = moveSubSampleIntoListContainer(subSample.getId(), basicContainer.getId(), anyUser);
     assertTrue(subSample.isStoredInContainer());
     verifyAuditAction(AuditAction.MOVE, 1);