chore(deps): update dependency cz-conventional-changelog to v3

Author: renovate-bot

Diff for: package.json

@@ -53,7 +53,7 @@
     "codecov": "3.5.0",
     "conventional-changelog-cli": "2.0.21",
     "coveralls": "3.0.5",
-    "cz-conventional-changelog": "2.1.0",
+    "cz-conventional-changelog": "3.0.2",
     "diff": "4.0.1",
     "execa": "1.0.0",
     "nyc": "13.3.0",