Add macOS 15 CI images with Xcode 16.4

[targos]

V8 builds now need at least Xcode 16.4, which requires us to bump macOS to at least 15.3.

See nodejs/node#58069
Example failing canary release: https://ci-release.nodejs.org/job/iojs+release/10961/

@ryanaslett Is this something that can be done? I don't know if we would have to use the newer version for all jobs or if can keep macOS 13 and 15 in parallel and select a version in the Jenkins jobs based on the Node.js version.

[ryanaslett]

Our current mac infra has 2 intel nodes and 2 arm nodes that are serving both release infra and test infra.

Each node is capable of having 2 VM's at a time on them, for a total of 4 concurrent intel nodes and 4 concurrent arm nodes.

I have set the test infra to never have more than 3 at a time running so that release always has an available node.

If the node version determines which macOS version we test, then it should be relatively simple to do, as we're not trying to test both versions of xcode with the same test (thus not incurring more tests)

[ryanaslett]

Update on this:

We need to upgrade the underlying cluster from our current 3.0 to at least 3.2 in order to have Sequoia images available.

Orka is releasing 3.3 on Jun 11, so we can either wait until the new release is out (to avoid having to upgrade again), or, alternately we can ask to upgrade to 3.2 if we need this sooner.

[targos]

Waiting SGTM

[UlisesGascon]

+1 to wait

[mcollina]

@ryanaslett what's the status of this?

[ryanaslett]

Hi Matteo, so the Orka cluster is upgraded now, but the images that were running (the macos13 ones) were broken, and required reconstructing.

Thats done, and we're back, and now, with an upgraded cluster, able to move forward with macos15 images with modern XCode builds, however the current priority is to reconstruct some ARM instances as our provider sprung a surprisingly short deadline on us (Friday) when they would be shutting down our Primary ARM hosts.

Once we have some temporary ARM hosts in place, to buy us some time to find a new permanent ARM home, I'll be able to pivot back to creating the new OSX Instances.