CI: fix macOS arch for Apple Silicon runners

macOS-latest runners are Apple Silicon; setup-julia v3 errors when
`arch: x64` is requested there. Configure each matrix to use the
correct native architecture and bump setup-julia to v3.

Author: timholy

.github/workflows/CI.yml

@@ -31,26 +31,26 @@ jobs:
             arch: x64
           - os: macOS-latest
             version: '1'
-            arch: x64
+            arch: aarch64
     steps:
-      - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v3
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
       - uses: julia-actions/cache@v1
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v2
+      - uses: codecov/codecov-action@v5
         with:
           files: lcov.info
   multithreads:
     name: Julia (threads) 1 - ubuntu-latest - x64 - ${{ github.event_name }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v3
         with:
           version: '1'
           arch: 'x64'
@@ -59,6 +59,6 @@ jobs:
       - name: run test
         run: julia --project --code-coverage -t4 -e 'using Pkg; Pkg.test()'
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v2
+      - uses: codecov/codecov-action@v5
         with:
           files: lcov.info