⬆️ Bump node-sass from 4.14.1 to 7.0.0 in /website

Bumps [node-sass](https://github.com/sass/node-sass) from 4.14.1 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@v4.14.1...v7.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

website/package.json

@@ -26,7 +26,7 @@
     "@types/reach__router": "^1.2.4",
     "@types/react": "16.8.18",
     "@types/react-dom": "16.8.4",
-    "node-sass": "^4.12.0",
+    "node-sass": "^7.0.0",
     "prettier": "^1.17.1",
     "react-scripts": "3.0.1",
     "typescript": "3.4.5"