[Sessions Integration Tests] fail running on macos-14

[paulb777]

Description

The tests fail. Fix and update session-integration-tests.yml to use macos-14

Testing failed:
UITests_iOS-Runner (93978) encountered an error (The test runner failed to initialize for UI testing. (Underlying Error: Timed out while loading Accessibility.))

** TEST FAILED **

Reproducing the issue

https://github.com/firebase/firebase-ios-sdk/actions/runs/8638279486/job/23682376410

Firebase SDK Version

10.24.0

Xcode Version

15.3

Installation Method

CocoaPods

Firebase Product(s)

Crashlytics

Targeted Platforms

iOS

Relevant Log Output

No response

If using Swift Package Manager, the project's Package.resolved

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If using CocoaPods, the project's Podfile.lock

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[themiswang]

Seems like it related to the performance issue for xcode15? I am seeing many discussions within the community: https://github.com/orgs/community/discussions/68807, https://discuss.circleci.com/t/severe-performance-problems-with-xcode-15/49205/47

Haven't be able to reproduce on local yet, I am on macOS 14.4.1, xcode15.2 tho, I'll try 15.3 then

[themiswang]

Hmmmm reran the job seems work this time https://github.com/firebase/firebase-ios-sdk/actions/runs/8638279486/job/24694636170, it references the head commit of this change, old job could be flaky.

[ncooke3]

Some more evidence that the flakes are runner specific– actions/runner-images/#9591

I haven't investigated, but it is interesting that certain SDKs are failing (and then successfully re-running) consistently.