[CI Skip] heroku-buildpack-ruby v165
[CI Skip] heroku-buildpack-ruby v165

- Increase Node version to 6.11.1
- Set the `JAVA_HOME` environment variable at build time, which enables
  the use of Rake tasks like `JBundler`.

brightbytes/heroku-buildpack-ruby-without-assets-precompile,heroku/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,Genius/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,Genius/heroku-buildpack-ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile,orenyk/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,zunda/heroku-buildpack-ruby,Scalingo/ruby-buildpack,donnykurnia/heroku-buildpack-ruby,zunda/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,pilotcreative/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,andycroll/heroku-buildpack-jekyll,jonseaberg/heroku-buildpack-turbo-sprockets,jonseaberg/heroku-buildpack-turbo-sprockets,andycroll/heroku-buildpack-jekyll,Scalingo/ruby-buildpack