chore(deps-dev): bump node-sass from 3.13.1 to 4.14.1

Bumps [node-sass](https://github.com/sass/node-sass) from 3.13.1 to 4.14.1.
- [Release notes](https://github.com/sass/node-sass/releases)
- [Changelog](https://github.com/sass/node-sass/blob/master/CHANGELOG.md)
- [Commits](sass/node-sass@v3.13.1...v4.14.1)

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

package.json

@@ -40,7 +40,7 @@
     "mocha": "^2.3.0",
     "ng-annotate-loader": "0.0.10",
     "node-libs-browser": "^0.5.0",
-    "node-sass": "^3.13.0",
+    "node-sass": "^4.14.1",
     "raw-loader": "^0.5.1",
     "run-sequence": "^1.1.0",
     "sass-loader": "^4.0.2",