net/turnserver: Update 4.6.2 → 4.6.3
Changelog:
https://github.com/coturn/coturn/blob/4.6.3/ChangeLog
PR: 284168
Approved by: Chris Hutchinson <portmaster@BSDforge.com> (maintainer, timeout 2 weeks)
MFH: 2025Q1
(cherry picked from commit 41a4bc06302f9e59f155d6cded1984d42f028aac)