RFR: 8346285: Update jarsigner compatibility test for change in default digest algorithm [v2]

[Weijun Wang]

On Mon, 16 Dec 2024 15:29:15 GMT, Matthew Donovan <mdonovan at openjdk.org> wrote:

>> In this small PR, I updated the jarsigner compatibility test to handle the difference in default digest algorithms between JDK versions. The previous default was SHA-256 but has been updated to SHA-384.
>
> Matthew Donovan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   updated to use JarSigner.Builder.getDefaultDigestAlgorithm()

LGTM. Thanks.

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Marked as reviewed by weijun (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/22765#pullrequestreview-2506561182