chore(deps): update dependency commitizen to v3.1.1

Author: renovate-bot

package.json

@@ -67,7 +67,7 @@
     "typescript": "^3.1.4"
   },
   "devDependencies": {
-    "commitizen": "3.0.4",
+    "commitizen": "3.1.1",
     "cz-conventional-changelog": "2.1.0",
     "eclint": "2.8.1",
     "husky": "1.1.2",