deskutils/cairo-dock: track more dependencies

> Running Q/A tests (stage-qa)

Error: /usr/local/bin/cairo-dock is linked to /usr/local/lib/libdbus-1.so.3 from devel/dbus but it is not declared as a dependency
Warning: you need LIB_DEPENDS+=libdbus-1.so:devel/dbus
Error: /usr/local/bin/cairo-dock is linked to /usr/local/lib/libGLU.so.1 from graphics/libGLU but it is not declared as a dependency
Warning: you need USE_GL+=glu
Error: /usr/local/bin/cairo-dock is linked to /usr/local/lib/libGL.so.1 from graphics/mesa-libs but it is not declared as a dependency
Warning: you need USE_GL+=gl
Error: /usr/local/bin/cairo-dock is linked to /usr/local/lib/libwayland-client.so.0 from graphics/wayland but it is not declared as a dependency
Warning: you need LIB_DEPENDS+=libwayland-client.so:graphics/wayland
Error: /usr/local/bin/cairo-dock is linked to /usr/local/lib/libXcomposite.so.1 from x11/libXcomposite but it is not declared as a dependency
Warning: you need USE_XORG+=xcomposite
Error: /usr/local/bin/cairo-dock is linked to /usr/local/lib/libXrandr.so.2 from x11/libXrandr but it is not declared as a dependency
Warning: you need USE_XORG+=xrandr
Error: /usr/local/bin/cairo-dock is linked to /usr/local/lib/libX11.so.6 from x11/libX11 but it is not declared as a dependency
Warning: you need USE_XORG+=x11
Error: /usr/local/bin/cairo-dock is linked to /usr/local/lib/libXinerama.so.1 from x11/libXinerama but it is not declared as a dependency
Warning: you need USE_XORG+=xinerama

PR: 227509
Reported by: antoine (via exp-run)