Switch to OpenJDK 11 to build JUnit 5

.travis.yml

@@ -18,19 +18,16 @@ install:
 
 matrix:
   include:
-    - os: linux
-      jdk: openjdk10
     - os: linux
       jdk: openjdk11
     - os: linux
-      jdk: openjdk-ea
-    - os: linux
-      jdk: openjdk10
+      jdk: openjdk11
       env: SCAN='--scan --stacktrace --warning-mode=all' JACOCO='-PenableJaCoCo' INSTALL='publishToMavenLocal'
     - os: osx
-      jdk: openjdk10
+      jdk: openjdk11
+    - os: linux
+      jdk: openjdk-ea
   allow_failures:
-    - jdk: openjdk11
     - jdk: openjdk-ea
 
 script:

jitpack.yml

@@ -1,5 +1,5 @@
 install:
   - wget https://github.com/sormuras/bach/raw/master/install-jdk.sh
-  - source ./install-jdk.sh -F 10 -L GPL
+  - source ./install-jdk.sh -F 11 -L GPL
   - ./gradlew --version
   - ./gradlew publishToMavenLocal -x test