message: test: fix snapshot fixture creation
diff: @@ -124,7 +124,7 @@ describe('Snapshot', () => {
  let pubsub: PubSub;
  let subscription: Subscription;
  before(() => {
  - pubsub = new PubSub(PUBSUB);
  + pubsub = new PubSub({projectId: PROJECT_ID});
  subscription = pubsub.subscription('test');
  });
  