Specify aarch64 on macos-latest

Author: penelopeysm

.github/workflows/CI.yml

@@ -19,35 +19,23 @@ concurrency:
 jobs:
   test:
     runs-on: ${{ matrix.os }}
-    continue-on-error: ${{ matrix.version == 'nightly' }}
     strategy:
       matrix:
         version:
           - 'min'
           - '1'
-        os:
-          - ubuntu-latest
-          - macOS-latest
-          - windows-latest
-        arch:
-          - x86
-          - x64
         num_threads:
           - 1
           - 2
-        exclude:
-          - os: windows-latest
-            arch: x86
-          - os: macOS-latest
+        runner:
+          - os: ubuntu-latest
+            arch: x64
+          - os: ubuntu-latest
             arch: x86
-          - version: '1.6'
-            num_threads: 2
-        include:
-          - version: '1'
-            os: ubuntu-latest
+          - os: windows-latest
             arch: x64
-            num_threads: 1
-            coverage: true
+          - os: macos-latest
+            arch: aarch64
 
     steps:
       - uses: actions/checkout@v4