rust - add macos CI job

Author: jeremylt

.github/workflows/rust-test-with-style.yml

@@ -10,7 +10,7 @@ jobs:
   test:
     strategy:
       matrix:
-        os: [ubuntu-24.04]
+        os: [ubuntu-24.04, macos-15]
         compiler: [clang]
 
     runs-on: ${{ matrix.os }}