[RUM-18130] Migrate test jobs to macOS Sequoia ARM64 runners

[cdn34dd]

What does this PR do?

• Migrates CI test jobs from macOS Sonoma runners to macOS Sequoia ARM64 runners. It also updates native iOS tests to use the iOS 18.5 simulator with an iPhone 16 Pro Max.

Motivation

• Keep the CI environment aligned with the currently supported macOS, Xcode, and iOS simulator infrastructure.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Updates GitLab CI to run macOS-based jobs on newer Apple Silicon runners and targets newer iOS simulator versions for Xcode test execution.

Changes:

• Switched macOS runner tags from macos:sonoma to macos:sequoia-arm64 across test jobs
• Updated iOS simulator destination from iOS 17.4 / iPhone 15 Pro Max to iOS 18.5 / iPhone 16 Pro Max for Xcode tests

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[datadog-prod-us1-4]

✅ All CI checks and tests passed.

🎉 All green!

🧪 All tests passed
❄️ No new flaky tests detected

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

Suppressed comments (1)

.gitlab-ci.yml:10

• DEVELOPER_DIR is pinned to a fully versioned Xcode app bundle path (/Applications/Xcode-16.4.0.app/...). This makes the pipeline brittle if the runner image updates the Xcode patch version or uses a different naming convention (common on macOS images), causing all jobs to fail at startup. Consider switching to a stable path/symlink agreed for the runner image (e.g., a non-patch app name) or selecting the desired Xcode via xcode-select in the iOS jobs so minor image updates don’t require CI config changes.

 DEVELOPER_DIR: '/Applications/Xcode-16.4.0.app/Contents/Developer'
IOS_SIMULATOR_DESTINATION: 'platform=iOS Simulator,OS=18.5,name=iPhone 16 Pro Max'

[maciejburda]

LGTM