Specs. Update Ruby versions in TravisCI config

Author: andrykonchin

.travis.yml

@@ -3,11 +3,10 @@ sudo: required
 language: ruby
 rvm:
   - ruby-2.3.8
-  - ruby-2.4.5
-  - ruby-2.5.3
-  - ruby-2.6.1
-  - jruby-9.1.17.0
-  - jruby-9.2.6.0
+  - ruby-2.4.6
+  - ruby-2.5.5
+  - ruby-2.6.3
+  - jruby-9.2.7.0
 gemfile:
 gemfile:
   - gemfiles/rails_4_2.gemfile