Run SonarQube analysis with JDK 11

As per https://sonarcloud.io/documentation/appendices/end-of-support/ the SonarQube scanner should now run with Java 11.

Our builds are using the first jdk in the module's list [1], which is often jdk_1.8_latest.

Some builds pass but recently onboarded projects fail, like https://ci-builds.apache.org/job/Sling/job/modules/job/sling-org-apache-sling-adapter-annotations-it/job/master/8/console which says "The version of Java (1.8.0_252) you have used to run this analysis is deprecated and we will stop accepting it soon" and "To make sure everyone is aware of this limitation we fail the analysis of new projects". The "new projects" bit apparently explains while existing projects pass.

[1] https://github.com/apache/sling-tooling-jenkins/blob/master/vars/slingOsgiBundleBuild.groovy