.travis.yml in ruby-graphviz-1.2.4 vs .travis.yml in ruby-graphviz-1.2.5

- old
+ new

@@ -1,21 +1,8 @@
-# Need sudo to install rubinius-3.69
-sudo: required
+dist: xenial
 
-# The binary for rubinius-3.69 is not available for
-# ubuntu/12.04 (Precise Pangolin) but is for ubuntu/14.04 (Trusty Tahr)
-#
-# See:
-#   - https://rubinius-binaries-rubinius-com.s3-us-west-2.amazonaws.com/
-#   - "Rubinius no longer supports Precise. Please use Trusty."
-#     https://docs.travis-ci.com/user/languages/ruby/#Supported-Ruby-Versions-and-RVM
-#
-# Note: travis-ci uses precise by default
-dist: trusty
-
 rvm:
-  - 2.2.10
-  - 2.4.5
-  - 2.5.3
-  - jruby
-  - rubinius-3.107
-  - rubinius-3.69
+  - 2.4.9
+  - 2.5.7
+  - 2.6.5
+  - 2.7.0
+  - jruby-9.2.9.0