irc/unreal: Update 6.1.9.1 => 6.2.6
Port changes:
- Drops LIB_DEPENDS and configure flag for libmaxminddb as there is a new built-in GeoIP database (mmdb).
- No longer RUN_DEPENDS on geoipupdate as the new database reloads on start or rehash.
Changelog:
https://github.com/unrealircd/unrealircd/blob/unreal60_dev/doc/RELEASE-NOTES.md#unrealircd-626
PR: 297176
Reported by: Matthew Horan <matt@matthoran.com> (author)
Approved by: tanawts@gmail.com (maintainer)
Approved by: osa, vvd (Mentors, implicit)
MFH: 2026Q3
(cherry picked from commit 0e55a5b8c5945203b0fab7078a3ef1ae5674ed93)