sudo: false
language: ruby
cache: bundler
before_install:
  - gem update --system
  - gem install bundler
rvm:
  - 2.5.1
  - 2.4.4
  - 2.3.7

language: ruby
cache: bundler
before_install:
  - gem update --system
  - gem install bundler
rvm:
  - 2.5.1
  - 2.4.4
  - 2.3.7

Drop unused Travis sudo: false directive
CI: Drop unused Travis sudo: false directive

See https://blog.travis-ci.com/2018-11-19-required-linux-infrastructure-migration for more details