• Add support for Java 21 and remove support for Java 11 (!243)
  
• Set Java 21 as system-wide default version (!243)
  
• Update fixtures for compatibility with jdk21 (!243)
  
• Upgrade jdk17 from 17.52.19 to 17.54.21 (!243)
  
• Upgrade ant from 1.10.12 1.10.15 (!243)
  
• Upgrade gradle from 7.5 to 8.12 (!243)
  
• Upgrade grails from 5.2.0 to 5.3.6 (!243)
  
• Upgrade maven from 3.8.8 to 3.9.9 (!243)
  
• Upgrade sbt from 1.7.1 to 1.10.7 (!243)
  
• Upgrade scala from 2.13.8 to 2.13.15 (!243)