Update dependencies versions. cc@pdehann

I know we'll never win this game, but it looks like Mikeal released 2.38.0 to npm a couple hours ago. (and there may possibly be a 2.38.1 tagged as well)

https://www.npmjs.org/package/request
https://github.com/mikeal/request/compare/v2.37.0...v2.38.1