[ci] Fix macOS jobs failing to download Node.js 14

[Drarig29]

What and why?

https://github.blog/changelog/2024-04-01-macos-14-sonoma-is-generally-available-and-the-latest-macos-runner-image/

Yesterday, the macos-latest tag changed:

• From macOS 12 (x64) (example passing run)
• To macOS 14 arm64 (example failing run)

Corresponding docs PR: actions/runner-images#9601

Because of this change, the setup-node job started failing with:

Unable to find Node version '14.18.3' for platform darwin and architecture arm64

The reason is that there is no node-14.18.3-darwin-arm64.tar.gz asset in this release, probably because Node.js 14 was never compiled for darwin arm64:

• https://github.com/actions/node-versions/releases/tag/14.18.3-1681282640

How?

• Stay up-to-date and still use the macos-latest runner, which is now lighter and on arm64
• Use Node.js 14.18.3 for all jobs, except when building the standalone binary because pkg downloads the right Node.js binary anyway.

Review checklist

• Feature or bugfix MUST have appropriate tests (unit, integration)

[datadog-datadog-prod-us1]

Datadog Report

Branch report: corentin.girard/fix-macos-runner
Commit report: 0bb37ea
Test service: datadog-ci-tests

✅ 0 Failed, 8112 Passed, 0 Skipped, 58.66s Wall Time