chore(package): update yeoman-assert to version 3.0.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -20,7 +20,7 @@
   },
   "devDependencies": {
     "jest": "^18.1.0",
-    "yeoman-assert": "^2.2.2",
+    "yeoman-assert": "^3.0.0",
     "yeoman-test": "^1.6.0"
   },
   "jest": {