.travis.yml in rabbit_messaging-0.7.1 vs .travis.yml in rabbit_messaging-0.8.1

@@ -1,12 +1,11 @@
 language: ruby
 matrix:
   fast_finish: true
   include:
-  - rvm: 2.3
-  - rvm: 2.4
   - rvm: 2.5
   - rvm: 2.6
+  - rvm: 2.7
   - rvm: ruby-head
   allow_failures:
   - rvm: ruby-head
 sudo: false
 cache: bundler