Upgrade from deprecated macos-13 to macos-latest in CI

[cclauss]

Fixes: #590

• Upgrade from deprecated macos-13 to macos-15-intel in CI #590

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[ppkarwasz]

Hi @cclauss,

Thanks for the PR! As I noted in #590 (comment), this will cause a problem for the combination os == 'macos-latest' and java == '8', due to the lack of a Temurin JDK 8 distribution for ARM64.

You can fix it by modifying the JDK setup step:

- name: Set up JDK ${{ matrix.java }}
  uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # v5.0.0
  with:
    distribution: ${{ runner.arch == 'ARM64' && matrix.java == '8' && 'zulu' || 'temurin' }}
    java-version: ${{ matrix.java }}

[cclauss]

runner.arch == 'ARM64' could be Linux or Windows on ARM, so let's constrain this to runner.os == 'macOS'

• https://docs.github.com/en/actions/reference/runners/github-hosted-runners#standard-github-hosted-runners-for-public-repositories

[ppkarwasz]

LGTM, thanks!

[garydgregory]

FTR, this is related to my post on actions/runner-images#13046
Thank you @cclauss !