chore(package): update babel-runtime to version 6.11.6 (#2401)

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -19,7 +19,7 @@
   "license": "BSD-3-Clause",
   "dependencies": {
     "babel-polyfill": "6.8.0",
-    "babel-runtime": "6.6.1",
+    "babel-runtime": "6.11.6",
     "bcrypt-nodejs": "0.0.3",
     "body-parser": "1.15.2",
     "colors": "1.1.2",