feat: try support sequoia VO preferences being sandboxed

[jlp-craigmorten]

Issue

Partially fixes guidepup/guidepup#89

Fixes #40

Details

VoiceOver preferences have been moved in Sequoia, this change attempts to support the new setup.

CheckList

• Has been tested (where required).

[jlp-craigmorten]

Alas we're seeing:

/Users/runner/Library/Group Containers/group.com.apple.VoiceOver/Library/Preferences/com.apple.VoiceOver4/default.plist: file does not exist or is not readable or is not a regular file (Error Domain=NSCocoaErrorDomain Code=260 "The file “default.plist” couldn’t be opened because there is no such file." UserInfo={NSFilePath=/Users/runner/Library/Group Containers/group.com.apple.VoiceOver/Library/Preferences/com.apple.VoiceOver4/default.plist, NSURL=file:///Users/runner/Library/Group%20Containers/group.com.apple.VoiceOver/Library/Preferences/com.apple.VoiceOver4/default.plist, NSUnderlyingError=0x600001dc07e0 {Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"}})

So it appears the GitHub runner agent doesn't have permissions to read/write to the necessary plist... might be a bit stuck here unless we get changes into the runner itself!