When updating the version of Java used, the following places need to be adjusted:
Versionssection of the README.mdpom.xmlfile.java-versionfile (used by Github Actions scripts)Dockerfileused for deploying on Dokku
Versionssection of the README.mdenginessection infrontend/package.json(this is used by Github Actions scripts)Dockerfileused for deploying on Dokkupom.xmlin the configuration offrontend-maven-plugin(adjust both the node and npm versions)