chore(deps): update dependency commitizen to v4

Author: renovate[bot]

package.json

@@ -92,7 +92,7 @@
     "@types/react-dom": "16.0.11",
     "@types/react-helmet": "5.0.8",
     "@types/webfontloader": "1.6.29",
-    "commitizen": "3.0.5",
+    "commitizen": "4.3.1",
     "cz-conventional-changelog": "2.1.0",
     "docz": "1.2.0",
     "docz-plugin-css": "0.11.0",