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

Closes #27

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "broccoli-asset-rev": "^3.0.0",
     "bulma": "^0.7.4",
     "commitizen": "^3.0.7",
-    "cz-conventional-changelog": "^2.1.0",
+    "cz-conventional-changelog": "^3.0.2",
     "ember-cli": "^3.8.1",
     "ember-cli-code-coverage": "^1.0.0-beta.8",
     "ember-cli-dependency-checker": "^3.0.0",