git: openjdk/jdk8u-dev: 8324723: GHA: Upgrade some actions to avoid deprecated Node 16

[George Adams]

Changeset: 047b08a8
Branch: master
Author:    George Adams <gdams at openjdk.org>
Date:      2024-08-13 14:56:32 +0000
URL:       https://git.openjdk.org/jdk8u-dev/commit/047b08a891d837efb925448b6334679f772ef0e5

8324723: GHA: Upgrade some actions to avoid deprecated Node 16
8315863: [GHA] Update checkout action to use v4

Reviewed-by: sgehwolf, zzambers
Backport-of: f2565a6c6f26e84d8e5eede39c0f3a50be5d579f

! .github/workflows/submit.yml