CI failing for the use of macOS11 runner image

[lalitb]

failure - https://github.com/microsoft/cpp_client_telemetry/actions/runs/9889178216/job/27314645563?pr=1286

macOS11 is not longer in the list of available runner images - https://github.com/actions/runner-images
The fix should be to upgrade to macOS12 runner image.

[ThomsonTan]

@lalitb thanks for looking this one.

[ThomsonTan]

@absaroj this is the issue I mentioned in today's community meeting. Thanks for looking into it.