Bump faraday versions

[Draiken]

Description

The current Faraday dependency is extremely old (8 years ago) and very restrictive.

I've relaxed the version requirements and ran the tests without issues.

Version 3 is still in development and unfortunately forcing anyone that uses the gem to downgrade Faraday to 0.9 is not a great solution. Because of that I believe we can relax those dependencies without issues.

Changelog Stub

• Relaxed faraday and faraday-middleware dependency versions

Checklist

• Tests (if applicable)
• Documentation (if applicable)
• Changelog stub (or use conventional commit messages)

[coveralls]

Coverage decreased (-0.5%) to 99.507% when pulling 1e92df1 on Draiken:bump-faraday into f78e510 on uploadcare:master.

[Draiken]

Crap, I think to support Ruby 1.9 we'd also have to lock json version to ~> 1 and that'd use a very vulnerable JSON version from 2015 too.
And you cannot really release a minor patch changing these versions without breaking apps on Ruby 1.9. I imagine it'd have to be a major version upgrade.

I guess I will have to use a fork until version 3 is out 😞