message: test(Masthead): update UI integration test case
  ### Description
  This change updates the UI integration test case of `<Masthead>` to catch up the change in
  ### Changelog
  **Changed**
  A change to the UI integration test case of `<Masthead>` to catch up the change in
diff: @@ -12,7 +12,9 @@ describe('Masthead', () => {
  await page.goto(
  `http://localhost:${process.env.PORT}/iframe.html?id=components-masthead--default&knob-Use%20mock%20data=true`
  );
  - await page.click('[data-autoid="dds--masthead__hamburger"]');
  + await page.click(
  + '[data-autoid="dds--masthead"] .bx--header__menu-toggle'
  + );
  await page.click('button.bx--side-nav__submenu');
  });
  