Address some critical vulnerabilities (#198)

Author: bryanmikaelian

package.json

@@ -87,7 +87,6 @@
     "eslint-plugin-require-path-exists": "^1.1.8",
     "express": "^4.17.1",
     "husky": "^0.14.3",
-    "istanbul": "^0.4.5",
     "jquery": "^3.2.1",
     "karma": "5.1.1",
     "karma-browserify": "^7.0.0",
@@ -101,7 +100,7 @@
     "karma-typescript": "^5.1.0",
     "lint-staged": "^10.2.13",
     "lodash": "^4.17.15",
-    "mocha": "^2.2.5",
+    "mocha": "^4.1.0",
     "node-fetch": "^2.6.0",
     "np": "^3.0.4",
     "prettier-eslint-cli": "^4.7.1",