fix(package): update cookie to version 0.4.0

Author: greenkeeper[bot]

package.json

@@ -29,7 +29,7 @@
   "homepage": "https://github.com/ember-fastboot/fastboot#readme",
   "dependencies": {
     "chalk": "^2.0.1",
-    "cookie": "^0.3.1",
+    "cookie": "^0.4.0",
     "debug": "^4.1.0",
     "najax": "^1.0.3",
     "resolve": "^1.8.1",