Modify CI workflow architecture settings

Updated architecture matrix for CI workflow and removed Apple M-series test.

Author: odow

.github/workflows/ci.yml

@@ -17,16 +17,12 @@ jobs:
       matrix:
         version: ['1.10', '1']  # Test against LTS and current minor release
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        arch: [x64]
+        arch: [default]
         include:
           # Also test against 32-bit Linux on LTS.
           - version: '1.10'
             os: ubuntu-latest
             arch: x86
-          # Test against Apple M-series
-          - version: '1'
-            os: macos-14
-            arch: aarch64
     steps:
       - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v3