chore(deps-dev): update cz-conventional-changelog requirement

Updates the requirements on [cz-conventional-changelog](https://github.com/commitizen/cz-conventional-changelog) to permit the latest version.
- [Release notes](https://github.com/commitizen/cz-conventional-changelog/releases)
- [Commits](commitizen/cz-conventional-changelog@v2.1.0...v3.0.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -31,7 +31,7 @@
     "@adonisjs/mrm-preset": "^2.0.3",
     "@types/node": "^12.0.3",
     "commitizen": "^3.1.1",
-    "cz-conventional-changelog": "^2.1.0",
+    "cz-conventional-changelog": "^3.0.2",
     "del-cli": "^2.0.0",
     "doctoc": "^1.4.0",
     "husky": "^3.0.0",