Bump node-sass from 5.0.0 to 6.0.0

Bumps [node-sass](https://github.com/sass/node-sass) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/sass/node-sass/releases)
- [Changelog](https://github.com/sass/node-sass/blob/master/CHANGELOG.md)
- [Commits](sass/node-sass@v5.0.0...v6.0.0)

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

Author: dependabot[bot]

package.json

@@ -57,7 +57,7 @@
     "husky": "5.1.3",
     "jest": "^26.4.2",
     "jest-when": "^3.2.1",
-    "node-sass": "^5.0.0",
+    "node-sass": "^6.0.0",
     "npm-run-all": "^4.1.5",
     "prettier": "2.2.1",
     "pretty-quick": "3.1.0",