chore(package): update cz-conventional-changelog to version 3.0.2

Closes #492

Author: greenkeeper[bot]

package.json

@@ -37,7 +37,7 @@
     "chai-string": "^1.2.0",
     "codeclimate-test-reporter": "^0.5.0",
     "commitizen": "^3.0.0",
-    "cz-conventional-changelog": "^2.0.0",
+    "cz-conventional-changelog": "^3.0.2",
     "eslint": "^5.0.0",
     "glob": "^7.1.1",
     "husky": "^1.0.0",