x11-wm/lxqt-wayland-session: pet stage-qa, lxqt-qdbus is a bash script (+)

> Running Q/A tests (stage-qa)

Error: '/bin/bash' is an invalid shebang you need USES=shebangfix for 'bin/lxqt-qdbus'

Reported by: bulk -t
Approved by: portmgr blanket