fix(node-sass): bump version (microsoft#309)

This version bump should fix issue with `node-sass` installation on some
systems.
Tested on Win 10.

Thanks!

Closes microsoft#165

Author: peterblazejewicz

package-lock.json

@@ -87,7 +87,7 @@
         "concurrently": "^5.0.0",
         "eslint": "^6.4.0",
         "jest": "^24.9.0",
-        "node-sass": "^4.13.0",
+        "node-sass": "^4.14.1",
         "nodemon": "^1.19.2",
         "shelljs": "^0.8.3",
         "supertest": "^4.0.2",