fix: spotlesscheck it

Author: marcelogpinheiro

src/integration-test/java/com/commercetools/sync/integration/services/impl/ProductTypeServiceImplIT.java

@@ -516,8 +516,12 @@ void updateProductType_WithValidChanges_ShouldUpdateProductTypeCorrectly() {
       futures.add(future);
     }
 
-    readyLatch.await(5, java.util.concurrent.TimeUnit.SECONDS);
-
+    final boolean allThreadsReady =
+        readyLatch.await(5, java.util.concurrent.TimeUnit.SECONDS);
+    assertThat(allThreadsReady)
+        .as("All threads should be ready within timeout")
+        .isTrue();
+    
     // Start all threads at once
     startLatch.countDown();
 
@@ -527,7 +531,11 @@ void updateProductType_WithValidChanges_ShouldUpdateProductTypeCorrectly() {
         .join();
 
     executorService.shutdown();
-    executorService.awaitTermination(10, java.util.concurrent.TimeUnit.SECONDS);
+    final boolean executorTerminated =
+        executorService.awaitTermination(10, java.util.concurrent.TimeUnit.SECONDS);
+    assertThat(executorTerminated)
+        .as("Executor service should terminate within timeout")
+        .isTrue();
 
     // assertions - all calls should return the same result
     final Optional<Map<String, AttributeMetaData>> firstResult = futures.get(0).join();