chore(package): update node-notifier to version 7.0.0

Closes #81

Author: greenkeeper[bot]

package.json

@@ -74,7 +74,7 @@
     "html-webpack-plugin": "^3.2.0",
     "jest": "^23.6.0",
     "jest-serializer-vue": "^2.0.0",
-    "node-notifier": "^5.1.2",
+    "node-notifier": "^7.0.0",
     "optimize-css-assets-webpack-plugin": "^4.0.2",
     "ora": "^2.1.0",
     "portfinder": "^1.0.13",