New bugfix release:

- snap-confine: cleanup broken nvidia udev tags
- cmd/snap-confine: update valid security tag regexp
- overlord/ifacestate: refresh udev backend on startup
- dbus: ensure io.snapcraft.Launcher.service is created on re-
  exec
- snap-confine: add support for handling /dev/nvidia-modeset
- interfaces/network-control: remove incorrect rules for tun