language: ruby
rvm:
  - 2.0.0-p647
  - 2.1.7
  - 2.2.3
before_install: gem install bundler -v 1.10.6

language: ruby
rvm:
  - 2.7.1
  - 2.6.6
  - 2.5.8
before_install: gem install bundler

Update Ruby and buundler versions
CI: Update Ruby and buundler versions

Signed-off-by: Manuel Hutter <adc16fa41a38b174232f206e0b2bd006baaace68@hutter.io>
