Log warning if SIP is disabled and CLI version is < 2.15.1 (#2261)

* PR Checks: use `macos-12` runners for CLI v. < 2.15.1

Prior to CLI v2.15.1, MacOS ARM runners were not supported by the build tracer. "macos-latest" is now an ARM runner, so we run these tests on the old CLIs on Intel runners instead.

* Log a warning if SIP is disabled and CLI is < 2.15.1

* Add changenote for SIP-disabled support on old CLI versions

* Set up Python 3.11 for all MacOS checks

Author: angelapwen