chore(package): update commitizen to version 4.1.0

Closes #40

Author: greenkeeper[bot]

package.json

@@ -32,7 +32,7 @@
     "read-pkg-up": "^4.0.0"
   },
   "devDependencies": {
-    "commitizen": "^3.0.7",
+    "commitizen": "^4.1.0",
     "cz-conventional-changelog": "^2.0.0",
     "eslint": "^5.15.1",
     "eslint-config-finn": "^3.0.1",