git: openjdk/jdk21u-dev: master: 8358538: Update GHA Windows runner to 2025

[Aleksey Shipilev]

Changeset: 10929bdf
Branch: master
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2025-06-24 09:01:45 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/10929bdfa2c2e58d503d5364fff6fc50bdb23877

8358538: Update GHA Windows runner to 2025
8360042: GHA: Bump MSVC to 14.44

Reviewed-by: sgehwolf
Backport-of: b787ff6def08a050b690b60e4a0ceb3aec2b73c8

! .github/workflows/build-windows.yml
! .github/workflows/main.yml