RM-8604: Fix update.database with jdk21

When running with jdk21 update.databse fails near its end in checkFormalChanges.

Note that underlying cause seems to be betwixt library not working cleanly with jdk21. RM-11112 is already reported with the goal to remove/replace betwixt library entirely some time later.

try:

• Note that specific issue shows up in update.database part of try-upgrade-job
• with jdk21 https://builds.openbravo.com/view/try/job/try-init/3223/
• with jdk11 https://builds.openbravo.com/view/try/job/try-init/3224/