Upgrade cookie to 0.5.0

[PezCoder]

Hey! Noticed that the package cookie that we depend on has the latest version available that we can upgrade on which has a few perf benefits.

This although primarily comes from us using cookie-parser in our project which inturns is using an outdated version of the cookie package, while we're on the latest version & not able to de-dupe this to resolve to a single version leading to duplicate versions coming as part of the bundle.

Here's the changelog: https://github.com/jshttp/cookie/releases

• [x] I ran the tests locally & they seem to have been passing.

Open to suggestions.