.travis.yml in goodcheck-1.4.1 vs .travis.yml in goodcheck-1.5.0

@@ -1,8 +1,5 @@
-sudo: false
 language: ruby
 rvm:
-  - 2.4.3
-  - 2.5.0
-before_install:
-  - gem update --system
-  - gem install bundler -v 1.16.0
+  - 2.4.5
+  - 2.5.5
+  - 2.6.2