LISTSERV uses the operating system clock time and as such does not require patching for the DST change.  As long as your operating system has been updated to reflect the change, this will not cause a problem for LISTSERV.

However, Maestro users using versions prior to 3.0 will be affected by the DST date change.  The only way to fix this is to upgrade to the current supported version of Maestro.  To be honest, anyone running Maestro older than version 8 should upgrade to the current supported version; many bugs have been quashed and there are many, many new features available.