CI: Update latest JRuby to 9.2.14.0

See the December 8 2020 release post: the https://www.jruby.org/2020/12/08/jruby-9-2-14-0.html

Author: olleolleolle

.travis.yml

@@ -9,11 +9,11 @@ matrix:
     # Latest versions first
     - name: MRI 2.7.0 Latest
       rvm: 2.7.0
-    - name: JRuby 9.2.11.1 Latest on Java 11
-      rvm: jruby-9.2.11.1
+    - name: JRuby 9.2.14.0 Latest on Java 11
+      rvm: jruby-9.2.14.0
       jdk: oraclejdk11
-    - name: JRuby 9.2.11.1 Latest on Java 8
-      rvm: jruby-9.2.11.1
+    - name: JRuby 9.2.14.0 Latest on Java 8
+      rvm: jruby-9.2.14.0
       jdk: openjdk8
     - name: TruffleRuby Latest
       rvm: truffleruby