remove faraday version

[bedrock-adam]

Motivation (Why)

Fix bundle install in main app

Resolving dependencies.......
Bundler could not find compatible versions for gem "faraday":
  In snapshot (Gemfile.lock):
    faraday (= 0.15.4)
  In Gemfile:
    chartmogul-ruby was resolved to 1.5.0, which depends on
      faraday (~> 0.15.0)
    xpm_ruby was resolved to 0.1.0, which depends on
      faraday (~> 1)
Running `bundle update` will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.

[abreckner]

LGTM but check if you have to also check in the Gemfile.lock.

[bedrock-adam]

Great catch on the Gemfile.lock 👍