build: faster model dependent tests

Author: giladgd

.github/workflows/build.yml

@@ -383,7 +383,7 @@ jobs:
 
   model-dependent-tests:
     name: Model dependent tests
-    runs-on: macos-15
+    runs-on: macos-12
     env:
       NODE_LLAMA_CPP_GPU: false
     needs: