fix(package): update husky to version 4.2.1

Closes #170

Author: greenkeeper[bot]

package.json

@@ -18,7 +18,7 @@
     "expect": "^22.0.0",
     "firebase": "^4.8.0",
     "history": "^4.7.2",
-    "husky": "^0.14.3",
+    "husky": "^4.2.1",
     "jest-enzyme": "^5.0.0",
     "lint-staged": "^6.0.0",
     "lodash": "^4.17.4",