Update rest-client requirement from ~> 1.8 to >= 1.8, < 3.0

[dependabot-preview]

Updates the requirements on rest-client to permit the latest version.

Changelog

Sourced from rest-client's changelog.

1.8.0

• Security: implement standards compliant cookie handling by adding a
  dependency on http-cookie. This breaks compatibility, but was necessary to
  address a session fixation / cookie disclosure vulnerability.
  (#369 / CVE-2015-1820)

  Previously, any Set-Cookie headers found in an HTTP 30x response would be
  sent to the redirection target, regardless of domain. Responses now expose a
  cookie jar and respect standards compliant domain / path flags in Set-Cookie
  headers.

1.7.3

• Security: redact password in URI from logs (#349 / OSVDB-117461)
• Drop monkey patch on MIME::Types (added type_for_extension method, use
  the public interface instead.

1.7.2

• Ignore duplicate certificates in CA store on Windows

1.7.1

• Relax mime-types dependency to continue supporting mime-types 1.x series.
  There seem to be a large number of popular gems that have depended on
  mime-types '~> 1.16' until very recently.
• Improve urlencode performance
• Clean up a number of style points

1.7.0

• This release drops support for Ruby 1.8.7 and breaks compatibility in a few
  other relatively minor ways
• Upgrade to mime-types ~> 2.0
• Don't CGI.unescape cookie values sent to the server (issue #89)
• Add support for reading credentials from netrc
• Lots of SSL changes and enhancements: (#268)
  • Enable peer verification by default (setting VERIFY_PEER with OpenSSL)
  • By default, use the system default certificate store for SSL verification,
    even on Windows (this uses a separate Windows build that pulls in ffi)
  • Add support for SSL ca_path
  • Add support for SSL cert_store
  • Add support for SSL verify_callback (with some caveats for jruby, OS X, #277)
  • Add support for SSL ciphers, and choose secure ones by default
• Run tests under travis
• Several other bugfixes and test improvements
  • Convert Errno::ETIMEDOUT to RestClient::RequestTimeout
  • Handle more HTTP response codes from recent standards
  • Save raw responses to binary mode tempfile (#110)

... (truncated)

Commits

• See full diff in compare view

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[dependabot-preview]

Looks like rest-client is no longer updatable, so this is no longer needed.