message: Enable previously failing test
diff: @@ -421,7 +421,7 @@ CAF_TEST(depth_4_pipeline_500_items) {
  CAF_CHECK_EQUAL(deref<sum_up_actor>(snk).state.x, 125000);
  }
  -CAF_TEST_DISABLED(depth_3_pipeline_graceful_shutdown) {
  +CAF_TEST(depth_3_pipeline_graceful_shutdown) {
  auto src = sys.spawn(file_reader, 50u);
  auto stg = sys.spawn(filter);
  auto snk = sys.spawn(sum_up);
  