Increase awaitTermination timeout in MvStorePersistenceTest

Signed-off-by: fjtirado <ftirados@redhat.com>

Author: fjtirado

impl/test/src/test/java/io/serverlessworkflow/impl/test/MvStorePersistenceTest.java

@@ -56,7 +56,7 @@ void testSimpleRun() throws Exception {
       assertNoInstance(handlers, definition);
       definition.instance(Map.of()).start().join();
       service.shutdown();
-      service.awaitTermination(500, TimeUnit.MILLISECONDS);
+      service.awaitTermination(1000, TimeUnit.MILLISECONDS);
       assertNoInstance(handlers, definition);
     } finally {
       Files.delete(Path.of(dbName));