chore(deps-dev): bump node-sass from 4.12.0 to 7.0.0

Bumps [node-sass](https://github.com/sass/node-sass) from 4.12.0 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@v4.12.0...v7.0.0)

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

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

Author: dependabot[bot]

package.json

@@ -82,7 +82,7 @@
     "jest": "^23.5.0",
     "lerna": "^3.2.1",
     "lint-staged": "^7.2.2",
-    "node-sass": "^4.9.3",
+    "node-sass": "^7.0.0",
     "prettier": "^1.14.2",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",