chore(package): update conventional-changelog to version 0.5.1

http://greenkeeper.io/

package.json

@@ -25,7 +25,7 @@
     "toml-js": "^0.0.8"
   },
   "devDependencies": {
-    "conventional-changelog": "^0.5.0",
+    "conventional-changelog": "^0.5.1",
     "cz-conventional-changelog": "^1.1.2",
     "semantic-release": "^4.3.5"
   }