add aarch64

Author: jason-yoon21

.github/workflows/CI.yml

@@ -23,8 +23,11 @@ jobs:
       matrix:
         os: [windows-latest, macos-latest]
         julia-version: ['1.10','1.11','1.12', 'lts']
-        arch:
-          - x64
+        include:
+          - os: macos-latest
+            julia-arch: aarch64
+          - os: macOS-latest
+            julia-arch: x64
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2