Debezium server duplicates scripting jar files

As part of DBZ-5154, debezium server now includes jar file with support for the scripting. These jar file should be in dedicated directory opt_lib and included into class path only when user requests it. However, all debezium-scripting-opt-depts are included also in lib directory. Besides duplicating the jar files, it can also introduce a security risk, as they are by default included into class path.