update macos CI runners

Author: mathleur

.github/workflows/build_wheels.yml

@@ -120,10 +120,10 @@ jobs:
     strategy:
       matrix:
         platform:
-          - runner: macos-13
-            target: x86_64
           - runner: macos-14
             target: aarch64
+          - runner: macos-15
+            target: x86_64
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5