Update tests
Update tests

- Skip the naether test which is failing for unknown reasons that need further investigation
- Change the description so that only tests that use `cedar-14` have it in the description

instacart/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,Scalingo/ruby-buildpack,instacart/heroku-buildpack-ruby,Genius/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,Genius/heroku-buildpack-ruby,Scalingo/ruby-buildpack,brightbytes/heroku-buildpack-ruby-without-assets-precompile,makifund/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile