Update package-json to the latest version 🚀 (#1108)

* fix(package): update package-json to version 6.4.0

* chore(package): update lockfile package-lock.json

Author: greenkeeper[bot]

package-lock.json

@@ -47,7 +47,7 @@
     "immutable-devtools": "0.1.3",
     "js-beautify": "1.10.0",
     "json-file-plus": "3.2.0",
-    "package-json": "6.1.0",
+    "package-json": "6.4.0",
     "parse": "2.4.0",
     "passport": "0.4.0",
     "passport-local": "1.0.0",