client: update rest-client to include request
client: update rest-client to include request

RestClient was updated to version 1.8 and there was a backwards
incompatible change to a public API.

We need to pass the request object to the custom made response object as
the fourth argument.

https://github.com/rest-client/rest-client/commit/c215b22bdbcb988dcc40117ff45432b0db25175b

rafaelbandeira3/mpn-rb