old_contents: // This file contains dependencies that are only needed when running in a test
  // environment. In the dev and live environment these are provided by static.
  //= require govuk_publishing_components/dependencies
  //= require govuk_publishing_components/lib/cookie-functions
  //= require govuk_publishing_components/lib/header-navigation
  //= require govuk_publishing_components/analytics
  
new_contents: // This file contains dependencies that are only needed when running in a test
  // environment. In the dev and live environment these are provided by static.
  //= require govuk_publishing_components/dependencies
  //= require govuk_publishing_components/lib/cookie-functions
  //= require govuk_publishing_components/analytics
  
subject: Remove reference to missing file