Updated ruby to 2.4.1 and jruby to 9.1.12.0 on travis

Author: iainbeeston

.travis.yml

@@ -4,9 +4,9 @@ rvm:
   - "2.0"
   - "2.1"
   - "2.2"
-  - "2.3.3"
-  - "2.4.0"
-  - "jruby-9.1.7.0"
+  - "2.3"
+  - "2.4.1"
+  - "jruby-9.1.12.0"
 
 sudo: false
 
@@ -19,9 +19,9 @@ matrix:
       gemfile: "gemfiles/Gemfile.ruby_19.x"
     - rvm: "jruby-1.7"
       gemfile: "gemfiles/Gemfile.ruby_19.x"
-    - rvm: "2.3.3"
+    - rvm: "2.4.1"
       gemfile: "gemfiles/Gemfile.multi_json.x"
-    - rvm: "2.3.3"
+    - rvm: "2.4.1"
       gemfile: "gemfiles/Gemfile.yajl-ruby.x"
-    - rvm: "2.3.3"
+    - rvm: "2.4.1"
       gemfile: "gemfiles/Gemfile.uuidtools.x"