Merge pull request #456 from Automattic/iangmaia/use-rubocop-from-bundle

[Tooling] Update `Dangerfile` to run Rubocop with `bundle exec`

Author: iangmaia

Dangerfile

@@ -3,9 +3,8 @@
 github.dismiss_out_of_range_messages
 
 # `files: []` forces rubocop to scan all files, not just the ones modified in the PR
-# `skip_bundle_exec` prevents RuboCop from running using `bundle exec`, which we don't want on the linter agent
 rubocop.lint(files: [], force_exclusion: true, inline_comment: true, fail_on_inline_comment: true,
-             include_cop_names: true, skip_bundle_exec: true)
+             include_cop_names: true)
 
 manifest_pr_checker.check_gemfile_lock_updated