Merge pull request #913 from olleolleolle/patch-3

CI: Use JRuby 9.2.19.0

Author: pitr-ch

.travis.yml

@@ -9,11 +9,11 @@ matrix:
     # Latest versions first
     - name: Latest MRI 2.7.3
       rvm: 2.7.3
-    - name: Latest JRuby 9.2.18.0 on Java 11
-      rvm: jruby-9.2.18.0
+    - name: Latest JRuby 9.2.19.0 on Java 11
+      rvm: jruby-9.2.19.0
       jdk: oraclejdk11
-    - name: Latest JRuby 9.2.18.0 on Java 8
-      rvm: jruby-9.2.18.0
+    - name: Latest JRuby 9.2.19.0 on Java 8
+      rvm: jruby-9.2.19.0
       jdk: openjdk8
     - name: Latest TruffleRuby
       rvm: truffleruby