net/asterisk22: Update 22.8.0 => 22.8.1

Changelog:
https://downloads.asterisk.org/pub/telephony/asterisk/old-releases/ChangeLog-22.8.1.html

PR: 292814
Approved by: Oleksandr Kryvulia <o.kryvulia@flex-it.com.ua> (maintainer)
Sponsored by: PANS Jarosław
MFH: 2026Q1

(cherry picked from commit 7a605cde7077cab73ef58e84966cbbe2b710a668)