Add Xcode 16 to CI tests

[mtrezza]

New Feature / Enhancement Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.

Current Limitation

CI is currently not testing with Xcode 16.

Feature / Enhancement Description

Add Xcode 16 to CI tests.

[parse-github-assistant]

Thanks for opening this issue!

• 🎉 We are excited about your ideas for improvement!