Bump node-sass from 4.14.1 to 5.0.0 (#159)

Bumps [node-sass](https://github.com/sass/node-sass) from 4.14.1 to 5.0.0.
- [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...v5.0.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -58,7 +58,7 @@
     "html-webpack-plugin": "^3.2.0",
     "identity-obj-proxy": "^3.0.0",
     "jest": "^24.9.0",
-    "node-sass": "^4.14.1",
+    "node-sass": "^5.0.0",
     "path": "^0.12.7",
     "sass": "^1.32.8",
     "sass-loader": "^8.0.2",