message: Fix nokogiri version to address CVE-2018-14404
diff: @@ -74,7 +74,7 @@ GEM
  listen (= 3.1.5)
  mercenary (~> 0.3)
  minima (= 2.5.0)
  - nokogiri (>= 1.8.2, < 2.0)
  + nokogiri (>= 1.8.5, < 2.0)
  rouge (= 2.2.1)
  terminal-table (~> 1.4)
  github-pages-health-check (1.8.1)
  @@ -85,7 +85,7 @@ GEM
  typhoeus (~> 1.3)
  html-pipeline (2.8.4)
  activesupport (>= 2)
  - nokogiri (>= 1.4)
  + nokogiri (>= 1.8.5)
  http_parser.rb (0.6.0)
  i18n (0.9.5)
  concurrent-ruby (~> 1.0)
  @@ -214,7 +214,7 @@ GEM
  jekyll-seo-tag (~> 2.1)
  minitest (5.11.3)
  multipart-post (2.0.0)
  - nokogiri (1.8.4)
  + nokogiri (1.8.5)
  mini_portile2 (~> 2.3.0)
  octokit (4.11.0)
  sawyer (~> 0.8.0, >= 0.5.3)
  