App 1070560: was SLR, now SLR 1.0 (scout)
App 1391110: was SLR - soldier, now SLR 2.0 (soldier)
App 1628350: was SLR - sniper, now SLR 3.0 (sniper)

The more generic name "Steam Linux Runtime" now refers to the whole
container runtime ecosystem.

Signed-off-by: Simon McVittie <smcv@collabora.com>