git: openjdk/jdk17u-dev: 8361478: GHA: Use MSYS2 from GHA runners

[Aleksey Shipilev]

Changeset: f682f482
Branch: master
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2025-08-27 10:04:00 +0000
URL:       https://git.openjdk.org/jdk17u-dev/commit/f682f482d79721ac701a13cf00aa8831cdbd988b

8361478: GHA: Use MSYS2 from GHA runners

Backport-of: ed9066bdf48c2d9925aea745951531ebf4af35a8

! .github/actions/get-msys2/action.yml