[libcxx] [llvm] [libc++] Move some macOS CI jobs to Github actions (PR #89083)

[Tom Stellard via llvm-commits]

================
@@ -199,6 +201,38 @@ jobs:
             **/CMakeError.log
             **/CMakeOutput.log
             **/crash_diagnostics/*
+
+  macos:
+    runs-on: macos-latest
----------------
tstellar wrote:

I recommend using macos-14 here, so we can control when we update to the next macos version.

https://github.com/llvm/llvm-project/pull/89083