merge macos builds

.github/workflows/build.yml

@@ -133,15 +133,19 @@ jobs:
 
   macos-arm:
     if: true
-    name: Build wheels on macOS (arm64)
-    # NOTE: macos-14 is apple silicon
-    runs-on: macos-14
+    name: Build wheels on macOS (${{ matrix.arch }})
+    runs-on: macos-${{ matrix.macos }}
     strategy:
       matrix:
-        arch:
-          - "arm64"
         cpy:
           - "cp310"
+        include:
+          - arch: "x86_64"
+            macos: 13
+            brew: "/usr/local/opt"
+          - arch: "arm64"
+            macos: 14
+            brew: "/opt/homebrew/opt"
 
     steps:
       - uses: actions/checkout@v4
@@ -173,13 +177,13 @@ jobs:
       - name: Build wheels
         uses: pypa/[email protected]
         env:
-          CIBW_BUILD: ${{matrix.cpy}}-macosx_${{matrix.arch}}
+          CIBW_BUILD: ${{ matrix.cpy }}-macosx_${{ matrix.arch }}
           CIBW_ARCHS_MACOS: ${{matrix.arch}}
           CIBW_ENVIRONMENT: >-
-            MACOSX_DEPLOYMENT_TARGET=14.0
-            _LIBICU_DIR="/opt/homebrew/opt/icu4c@${{ env.LIBICU_VERSION }}"
+            MACOSX_DEPLOYMENT_TARGET="${{ matrix.macos }}.0"
+            _LIBICU_DIR="${{ matrix.brew }}/icu4c@${{ env.LIBICU_VERSION }}"
 
       - uses: actions/upload-artifact@v4
         with:
-          name: macos-14-${{matrix.cpy}}-macosx_${{matrix.arch}}
+          name: macos-${{ matrix.macos }}-${{ matrix.cpy }}-macosx_${{ matrix.arch }}
           path: ./wheelhouse/*.whl