.travis.yml in superstore-2.4.4 vs .travis.yml in superstore-2.5.0

@@ -1,13 +1,11 @@
 language: ruby
-rvm:
-- 2.3.1
-sudo: required
-dist: trusty
+rvm: 2.6.3
+dist: xenial
 cache: bundler
 gemfile:
 - Gemfile
-- Gemfile-rails4.2
+- Gemfile.rails6
 addons:
-  postgresql: 9.5
+  postgresql: 9.6
 services:
 - postgresql