apps/lsi: Require strict confinement now

This also requires the steam-support interface, otherwise nothing is going
to work correctly. However, devmode snaps are being sunset, so it's time we
got our arses in gear and get the interface upstream.

Signed-off-by: Ikey Doherty <ikey@solus-project.com>

apps/linux-steam-integration/meta/snap.yaml

@@ -9,7 +9,7 @@ description:
   Building on the solus-runtime-gaming and LSI efforts, this snap
   provides users with a highly tweaked build of Steam and takes care
   of many compatibility issues.
-confinement: devmode
+confinement: strict
 grade: devel
 
 assumes: [snapd2.30]