www/ruby-sawyer: drop dependency to www/faraday

Drop dependency to www/farady on the assumption that www/ruby-sawyer is used
by ruby-octokit{,4}package.

* Both ruby-faraday and ruby-faraday1 require ruby-sawyer.
* Each ruby-faraday and ruby-faraday1 is required by ruby-octokit and
  ruby-octokit4.

It cause trouble that www/ruby-sawyer depending on
${RUBY_PKGPREFIX}-faraday{,1} when www/ruby-sawyer is built as dependency.

Bump PKGREVISION.

(taca)