x11/plank: Update 0.11.159 => 0.11.161

Changelogs:
https://github.com/zquestz/plank-reloaded/releases/tag/0.11.160
https://github.com/zquestz/plank-reloaded/releases/tag/0.11.161

Remove DBUSMENU option because there is no new release of libdbusmenu
in (almost) 10 years.

PR: 292843
MFH: 2026Q1