Rufo updated causes spec failures

I've noticed a few pipeline failures (including at https://gitlab.com/gitlab-org/labkit-ruby/merge_requests/27) with the following error when using bundle exec rake fix:

This is caused by rufo being updated to 0.10.0, which included this style decision: https://github.com/ruby-formatter/rufo/blob/master/CHANGELOG.md#changed-1

This looks like it's incompatible with rubocop:

Rubocop wants this format for a case statement:

  request = case method
            when :get
              Net::HTTP::Get.new(url)
            when :post
              Net::HTTP::Post.new(url)
            when :put
              Net::HTTP::Put.new(url)
            else
              raise "Unknown method: #{method}"
            end

While rufo changes that to

  request = case method
    when :get
      Net::HTTP::Get.new(url)
    when :post
      Net::HTTP::Post.new(url)
    when :put
      Net::HTTP::Put.new(url)
    else
      raise "Unknown method: #{method}"
    end