Bump node-sass from 3.10.1 to 7.0.0

Bumps [node-sass](https://github.com/sass/node-sass) from 3.10.1 to 7.0.0.
- [Release notes](https://github.com/sass/node-sass/releases)
- [Changelog](https://github.com/sass/node-sass/blob/master/CHANGELOG.md)
- [Commits](sass/node-sass@v3.10.1...v7.0.0)

---
updated-dependencies:
- dependency-name: node-sass
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -71,7 +71,7 @@
     "extract-text-webpack-plugin": "^0.8.2",
     "foundation-sites": "^5.5.3",
     "json-loader": "^0.5.3",
-    "node-sass": "^4.14.1",
+    "node-sass": "^7.0.0",
     "npm-run-all": "^1.2.12",
     "redux-logger": "^2.1.3",
     "rimraf": "^2.4.3",