Use oraclejdk11 in Travis build

fsteeg · fsteeg · commit df2f39ffa249 · 2021-04-19T11:38:23.000+02:00
JDK 8 is no longer supported for sonarqube analysis, see: https://travis-ci.org/github/metafacture/metafacture-core/builds/764392244#L1514
diff --git a/.travis.yml b/.travis.yml
@@ -18,7 +18,7 @@ sudo: false
 dist: trusty
 language: java
 jdk:
-  - oraclejdk8
+  - oraclejdk11
 addons:
   sonarcloud:
     organization: metafacture
