Skip building on macos-13 (x86_64) entirely

Author: matt-graham

.github/workflows/build.yml

@@ -44,13 +44,10 @@ jobs:
   build_wheels:
     name: Build wheels on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
-    env:
-      CIBW_SKIP: cp38-macosx_x86_64
     strategy:
       fail-fast: false
       matrix:
-        # macos-13 is an intel runner, macos-14 is apple silicon
-        os: [ubuntu-latest, macos-13, macos-14]
+        os: [ubuntu-latest, macos-latest]
 
     steps:
       - uses: actions/checkout@v4