chore(deps-dev): bump node-sass from 4.14.1 to 7.0.0

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]

package.json

@@ -163,7 +163,7 @@
         "jsdoc": "^3.5.5",
         "jsdom": "^12.0.0",
         "node-fetch": "^2.6.1",
-        "node-sass": "^4.9.3",
+        "node-sass": "^7.0.0",
         "npm-run-all": "^4.1.3",
         "pre-push": "^0.1.1",
         "prettier": "1.17.0",