build: update macOS runner version to 14

Author: frangarcj

.github/workflows/build.yml

@@ -56,7 +56,7 @@ jobs:
         name: vitasdk-linux-arm64
         path: build/*.tar.bz2
   build-macos:
-    runs-on: macos-12
+    runs-on: macos-14
     steps:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v5