Update Faraday dependency to 2.x

[multiplegeorges]

Which SDK version are you using?

0.14.0.0

What's the issue?

The Faraday connection created here does not specify a timeout or a way to configure a timeout on the request.

The gemspec requires an old version of Faraday.
With version 1.x of Faraday, we can't pass options to the adapters.
With version 2+ of Faraday, we can pass options to the adapters using Faraday.default_adapter_options. This would allow users to specify their own timeout configuration.

Steps/Sample code to reproduce the issue

require "http"
require "faraday"

Faraday.default_adapter = :http
Faraday.default_adapter_options = {timeout: 11}

Observed Results:

.../faraday-1.10.2/lib/faraday.rb:182:in `method_missing': undefined method `default_adapter_options=' for Faraday:Module (NoMethodError)

Expected Results:

If this gem would upgrade the Faraday gem, this would work.

[Zajn]

I opened #186 to hopefully get this bump to Faraday merged!

[olleolleolle]

Right, and this was addressed in 07f7689