chore: update concepts test (googleapis#1382)

Fixes googleapis#1379

(cherry picked from commit 9818aee)

google-cloud-datastore/src/test/java/com/google/cloud/datastore/it/ITDatastoreConceptsTest.java

@@ -575,15 +575,15 @@ public void testInequalityRange() {
   }
 
   @Test
-  public void testInequalityInvalid() {
+  public void testInequalityValid() {
     Query<Entity> query =
         Query.newEntityQueryBuilder()
             .setKind(TASK_CONCEPTS)
             .setFilter(
                 CompositeFilter.and(
                     PropertyFilter.gt("created", startDate), PropertyFilter.gt("priority", 3)))
             .build();
-    assertInvalidQuery(query);
+    assertValidQuery(query);
   }
 
   @Test