[SECURITY] Fedora 38 Update: ntp-refclock-0.6-1.fc38

ntp-refclock is a wrapper for reference clock drivers included in the ntpd daemon, which enables other NTP implementations to use the supported hardware reference clocks for synchronization of the system clock. It provides a minimal environment for the drivers to be able to run in a separate process, measuring the offset of the system clock relative to the reference clock and sending the measurements to another process controlling the system clock.