Incompatiblity with Faraday 2+

[patrickemuller]

Would you guys mind upgrading the supported Faraday version?
Version 2+ is much more robust and up-to-date than version 1.

Bundler could not find compatible versions for gem "faraday":
  In Gemfile:
    ruby-onfleet (~> 1.0.3) was resolved to 1.0.3, which depends on
      faraday (~> 1.10.0)

    slack-ruby-client (~> 2.1.0) was resolved to 2.1.0, which depends on
      faraday (>= 2.0)

[alvarezloaiciga]

I have created a PR to fix this: #12

[patrickemuller]

Thank you @alvarezloaiciga !