Use bullseye backports

config/package-lists/gui.list.chroot

@@ -1,3 +1,5 @@
+network-manager/bullseye-backports
+network-manager-gnome
 gnome-terminal
 dconf-cli
 gnome-system-monitor
@@ -23,10 +25,11 @@ gedit
 gnome-calculator
 vlc
 hardinfo
-remmina
-remmina-plugin-vnc
-remmina-plugin-rdp
-remmina-plugin-spice
+remmina/bullseye-backports
+remmina-common/bullseye-backports
+remmina-plugin-vnc/bullseye-backports
+remmina-plugin-rdp/bullseye-backports
+remmina-plugin-spice/bullseye-backports
 virt-manager
 gir1.2-spiceclientgtk-3.0
 libvirt-clients

config/package-lists/xfce4.list.chroot

@@ -1,7 +1,6 @@
 task-xfce-desktop
 xfce4-whiskermenu-plugin
 tango-icon-theme
-network-manager-gnome
 xfce4-notifyd
 xfce4-goodies
 xfce4-power-manager