[8.19] (backport #10234) Enable macOS unit tests for macOS 15

[mergify]

What does this PR do?

Created new GitHub workflow to run macOS unit tests on macOS 15 (arm64):

• on push to main and release branches
• for PRs

Why is it important?

Required by the support matrix.

Checklist

• I have read and understood the pull request guidelines of this project.
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have made corresponding change to the default configuration files
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added an entry in ./changelog/fragments using the changelog tool
• [ ] I have added an integration test or an E2E test

NB! On macOS 14 unit tests fail when using RACE_DETECTOR=true TEST_COVERAGE=true, that will be solved separately. Related issue: #10572

Test run: https://github.com/elastic/elastic-agent/actions/runs/18524318026

---

This is an automatic backport of pull request #10234 done by [Mergify](https://mergify.com).

[elasticmachine]

Pinging @elastic/elastic-agent-control-plane (Team:Elastic-Agent-Control-Plane)

[elasticmachine]

⏳ Build in-progress, with failures

• Buildkite Build
• Commit: 8040fa2

Failed CI Steps

• Unit tests - Ubuntu 22.04 ARM64
• Windows:2022:amd64:sudo
• Windows:2025:amd64:sudo
• Ubuntu:2404:amd64:sudo
• Win2022:sudo:default
• Win2022:sudo:fleet
• Win2022:sudo:fleet-endpoint-security
• Win2022:sudo:fleet-privileged
• Win2022:sudo:install-uninstall
• Win2022:non-sudo:default
• Win2025:sudo:default
• Win2025:sudo:default
• Win2025:sudo:fleet
• Win2025:sudo:fleet-endpoint-security
• Win2025:sudo:fleet-privileged
• Win2025:sudo:install-uninstall
• Win2025:non-sudo:default
• Win2025:non-sudo:default
• x86_64:non-sudo: default
• x86_64:sudo: default
• x86_64:sudo: fleet
• x86_64:sudo: fleet-endpoint-security
• x86_64:sudo: fleet-airgapped
• x86_64:sudo: fleet-airgapped-privileged
• x86_64:sudo: fleet-privileged
• x86_64:sudo: fleet-upgrade-to-pr-build
• x86_64:sudo: install-uninstall
• x86_64:sudo: fqdn
• x86_64:sudo: deb
• x86_64:sudo: container
• arm:sudo: default
• arm:sudo: fleet
• x86_64:non-sudo: default
• x86_64:sudo: default
• x86_64:sudo: fleet
• x86_64:sudo: fleet-endpoint-security
• x86_64:sudo: fleet-airgapped
• x86_64:sudo: fleet-airgapped-privileged
• x86_64:sudo: fleet-privileged
• x86_64:sudo: fleet-upgrade-to-pr-build
• x86_64:sudo: install-uninstall
• x86_64:sudo: deb
• x86_64:sudo: container
• x86_64:sudo:rpm
• v1.27.16:amd64:basic,wolfi,complete,complete-wolfi,service,cloud
• v1.28.15:amd64:basic,wolfi,complete,complete-wolfi,service,cloud
• v1.29.14:amd64:basic,wolfi,complete,complete-wolfi,service,cloud
• v1.30.0:amd64:basic,wolfi,complete,complete-wolfi,service,cloud
• v1.31.0:amd64:basic,wolfi,complete,complete-wolfi,service,cloud
• v1.31.0:amd64:basic,wolfi,complete,complete-wolfi,service,cloud
• v1.32.0:amd64:basic,wolfi,complete,complete-wolfi,service,cloud
• v1.33.0:amd64:basic,wolfi,complete,complete-wolfi,service,cloud
• fips:x86_64:sudo-true:fleet
• fips:arm64:sudo-true:fleet

History

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b mergify/bp/8.19/pr-10234 upstream/mergify/bp/8.19/pr-10234
git merge upstream/8.19
git push upstream mergify/bp/8.19/pr-10234