magento-test/dev/tools/grunt/configs/concat.json

{
  "options": {
    "stripBanners": true,
    "banner": "/**\n * Copyright © <%= grunt.template.today(\"yyyy\") %> Magento. All rights reserved.\n * See COPYING.txt for license details.\n */\n"
  },
  "setup": {
    "src": "<%= path.css.setup %>/setup.css",
    "dest": "<%= path.css.setup %>/setup.css"
  }
}