[core] Wrong dependency

Author: iartem

package.json

@@ -48,7 +48,7 @@
     "express-session": "1.16.2",
     "external-ip": "2.1.1",
     "formidable": "1.2.1",
-    "fs.extra": "^1.3.2",
+    "fs-extra": "^8.1.0",
     "geoip-lite": "1.3.7",
     "grunt": "1.0.4",
     "grunt-cli": "1.3.2",