chore(package): update husky to version 4.2.0

Closes #60

Author: greenkeeper[bot]

package.json

@@ -40,7 +40,7 @@
         "@types/sinon-chai": "^3.2.3",
         "chai": "^4.2.0",
         "del": "^5.1.0",
-        "husky": "^3.0.9",
+        "husky": "^4.2.0",
         "mocha": "^6.2.2",
         "prettier": "^1.18.2",
         "pretty-quick": "^2.0.0",