fix: .snyk & package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/npm:braces:20180219


The following vulnerabilities are fixed with a Snyk patch:
- https://snyk.io/vuln/npm:hoek:20180212
- https://snyk.io/vuln/npm:lodash:20180130

package.json

@@ -43,7 +43,7 @@
     "lodash": "^4.17.4",
     "moment": "^2.18.1",
     "morgan": "^1.8.1",
-    "node-sass-chokidar": "0.0.3",
+    "node-sass-chokidar": "1.3.1",
     "npm": "^5.6.0",
     "npm-run-all": "^4.1.2",
     "prop-types": "^15.6.0",
@@ -73,7 +73,7 @@
     "redux-thunk": "^2.2.0",
     "reflect-metadata": "^0.1.10",
     "save": "^2.3.0",
-    "snyk": "^1.88.0",
+    "snyk": "^1.89.0",
     "typeface-roboto": "0.0.50",
     "uuid": "^3.0.1"
   },