chore(package): update husky to version 4.2.1

Closes #138

Author: greenkeeper[bot]

package.json

@@ -52,7 +52,7 @@
   },
   "devDependencies": {
     "file-type": "^12.3.0",
-    "husky": "^3.0.8",
+    "husky": "^4.2.1",
     "jshint": "^2.10.2",
     "mocha": "^6.2.1",
     "prettier-standard": "^15.0.1",