Versions of `request` before 2.83.0 are susceptible to a ReDoS
attack via it's dependency `tough-cookie`. Version 2.83.0 of
`request` upgrades the version of `touch-cookie` to one that is no
longer susceptible to the attack.

Vulnerability advisory:
https://www.npmjs.com/advisories/525

`request` CHANGELOG:
https://github.com/request/request/blob/master/CHANGELOG.md#v2830-20170927