x11/libxkbfile: Update to 1.2.0
The autoconf build system has been removed in this release.
Update WWW and pkg-descr.
https://lists.x.org/archives/xorg-announce/2026-January/003662.html
PR: 294432
Approved by: x11 (arrowd)
Approved by: osa (mentor), fluffy (mentor)