Does not support faraday 2.x

[nicduke38degrees]

Using faraday ~> 2 as a direct dependency in our project.
We're attempting to use survey-gizmo-ruby ~> 8 but cannot resolve these two.
This is the error returned from bundle install

    survey-gizmo-ruby (~> 8) was resolved to 8.0.0, which depends on
      faraday_middleware was resolved to 0.1.3, which depends on
        faraday (~> 0.4.5)

[nicduke38degrees]

I opened #122 for review