fix(test/Dockerfile): Add debugedit for the test setup

The creation of debug packages requires debugedit.

Signed-off-by: David Runge <dvzrv@archlinux.org>

test/Dockerfile

 FROM docker.io/archlinux/archlinux
 
 RUN pacman -Syu --noconfirm --needed \
+		debugedit \
 		sudo \
 		fakeroot \
 		awk \