Bump travis jdk version.

Jan-M · Jan-M · commit 2d1e118771e3 · 2021-03-18T23:42:00.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,7 +3,7 @@ language: java
 sudo: false
 
 jdk:
-  - openjdk8
+  - openjdk11
 
 addons:
     postgresql: "13"
