DEB: Explicitly require dbus-x11 package

dbus-launch must be installed in order to simultaneously start multiple
TurboVNC sessions with GNOME under the same user account.  However,
recent Debian-based distributions (e.g. Ubuntu 22.04 and later) do not
automatically install it whenever gnome-session is installed.

cmakescripts/BuildPackages.cmake

@@ -56,7 +56,7 @@ if(TVNC_BUILDSERVER)
 	if(TVNC_USEPAM)
 		set(DEBDEPENDS "libpam0g, ${DEBDEPENDS}")
 	endif()
-	set(DEBDEPENDS "${DEBDEPENDS}, xauth, x11-xkb-utils, xkb-data")
+	set(DEBDEPENDS "${DEBDEPENDS}, dbus-x11, xauth, x11-xkb-utils, xkb-data")
 	if(TVNC_BUILDWEBSERVER)
 		if(PYTHON_VERSION VERSION_GREATER 3.0 OR PYTHON_VERSION VERSION_EQUAL 3.0)
 			set(DEBDEPENDS "${DEBDEPENDS}, python3")