Upgrade to HSQLDB 2.5.2

-- The DatabaseManager class is no longer included in the Jars. Use DatabaseManagerSwing instead. 
-- added support for additional REGEXP_ functions.
-- added support for adding extra columns to FOREIGN KEY indexes; see ALTER CONSTRAINT in the Guide
-- added support for RECURSIVE_TABLE in WITH RECURSIVE queries
-- added system role SCRIPT_OPS for export / import of database structure and data
-- added extensive features to the collection classes in org.hsqldb.lib (maps, lists, queues etc.) which can also be used in user apps
-- improved MySQL syntax support for ENUM
-- fixed a number of regression in 2.5.1, e.g. use of MODULE for LOCAL TEMPORARY tables, truncated microsecond precision of java.sql.Timestamp values
-- fixed several minor issues
-- removed all use of Java (up to JDK 16) deprecated methods