Log Message:
Update ruby-octokit to 4.4.0.

v4.4.0

Library changes

    * #777 This impacts all methods that pass a repository parameter.  Change
       Repository.validate_owner_and_name! to use URI::ABS_URI instead the
       deprecated URI.regexp
    * #752 Use octokit_warn instead of warn in Preview.warn_preview
    * #761 Octokit::AccountSuspended for 403 responses @koglinjg

New methods

    * #748 Add support for Source Import APIs @LizzHale
      https://developer.github.com/v3/migration/source_imports/
    * #814 #799 New method Repositories.branch_protection to get a branch's
      protection status
      https://developer.github.com/v3/repos/branches/#get-branch-protection
    * #770 Add Issues#lock and Issues#unlock @davidcelis
      https://developer.github.com/v3/issues/#lock-an-issue
      https://developer.github.com/v3/issues/#unlock-an-issue
    * #816 Add Pages.pages_build to get specific page build by ID
      https://developer.github.com/v3/repos/pages/#list-a-specific-pages-build

Updated Methods

    * #733 Support getting Milestones by repository id @stmllr
    * #739 Escape options values in authorize_url @shvaikalesh
    * #705 #704 Support API urls in Repository#from_url
    * #780 Dup options in #create_repo method before mutating the hash
      @davidcpell
    * #815 Change Pages.pages to use preview media type to gain additional
      data. Add Pages.request_page_build for
      https://developer.github.com/v3/repos/pages/#request-a-page-build
    * #797 Change #upload_assets to read files in read only mode @trevorrowe
    * #743 Add deprecation warning for when :permission parameter is passed
      to Organizations.create_team. Assign team repository permissions with
      Organizations.add_team_repository instead.
    * #805 *_stats methods return nil on timeout when : retry_wait is used.
      Previously returned empty Sawyer::Resource. @etiennebarrie
    * #819 #protect_branch Enable branch protection without enforcing
      required_status_checks. @mgreensmith

Documentation Edits

    * #750 Fix typo in README.md @blunderdome
    * #804 @kei-s #create_pull_request_comment_reply
    * #817 Fix .decline_repository_invitation API doc url
    * #742 Fix Default.middleware documentation comment @v-kolesnikov
    * #754 Add Table of contents to README.md

Octokit Development Changes

    * #751 Add webmock pessimism < 2.0.0
    * #723 Improved the setup for the Issues specs by creating temp repos
      to test against @tarebyte