chore(package): update commitizen to version 4.1.1

Closes #62

Author: greenkeeper[bot]

package.json

@@ -39,7 +39,7 @@
     "babel-core": "^6.26.3",
     "babel-preset-es2015": "^6.24.1",
     "babelify": "^8.0.0",
-    "commitizen": "^3.0.5",
+    "commitizen": "^4.1.1",
     "cz-conventional-changelog": "^2.1.0",
     "eslint": "^5.0.0",
     "eslint-config-finn": "^3.0.1",