Upgrade to Java 11

Currently, Stardat-ddieditor only runs on java 8 which is already obsolete and it is more secure to switch to Java 11 LTS

In the latest OpenJDK 8 (8u292-b10-0ubuntu1~20.04), it also has an issue: Caused by: java.security.KeyStoreException: Key protection algorithm not found: java.security.UnrecoverableKeyException: Encrypt Private Key failed: unrecognized algorithm name: PBEWithSHA1AndDESede

ANd it only can be run after the downgrade of OpenJdk 8: 'dpkg: warning: downgrading openjdk-8-jdk-headless:amd64 from 8u292-b10-0ubuntu1~~20.04 to 8u232-b09-0ubuntu1~~16.04.1

In Java 11, it has an error with JAXB missing dependencies. However, the error is still present even after JAXB dependencies are added to the pom.xml