DBZ-8414 Always specify await timeout

Now the `shutDownLatch` count down should be always called, but as
a safety measute add timeout to `await()` method, which should
always have some reasonable timeout.

debezium-embedded/src/main/java/io/debezium/embedded/async/AsyncEmbeddedEngine.java

@@ -336,7 +336,7 @@ private void closeEngineWithException(Throwable exitError) {
      */
     private void finishShutDown(Throwable exitError) {
         try {
-            shutDownLatch.await();
+            shutDownLatch.await(config.getLong(AsyncEngineConfig.TASK_MANAGEMENT_TIMEOUT_MS), TimeUnit.MILLISECONDS);
         }
         catch (InterruptedException e) {
             LOGGER.warn("Interrupted while waiting for shutdown to finish.");