[jdk8u-dev] RFR: 8358538: Update GHA Windows runner to 2025

[Severin Gehwolf]

On Thu, 3 Jul 2025 12:53:08 GMT, Antonio Vieiro <duke at openjdk.org> wrote:

> Backport of [JDK-8358538](https://bugs.openjdk.org/browse/JDK-8358538) from JDK11 that uses the new `windows-2025` GHA runner, that is replacing the old `windows-2019` GHA runner since 2025-06-30. The backport is not clean, since the GHA configuration is completely different from JDK11.
> 
> JDK8 still builds with Visual Studio 2017, so there's no need to backport [JDK-8360042](https://bugs.openjdk.org/browse/JDK-8360042), nor to change any other setting.
> 
> Build should be clean, but for the `jdk_security_infra` test failures, that are well known to fail in JDK8 (as they should in JDK11), and are unrelated.

Seems OK to me and #666 shows this in the summary so we need to get this in ASAP:


Windows Server 2019 has been retired. The Windows Server 2019 image has been removed as of 2025-06-30. For more details, see https://github.com/actions/runner-images/issues/12045

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Marked as reviewed by sgehwolf (Reviewer).

PR Review: https://git.openjdk.org/jdk8u-dev/pull/665#pullrequestreview-2994221113