Update run-tests.yml

Author: goergisn

.github/workflows/run-tests.yml

@@ -10,7 +10,7 @@ on:
 jobs:
 
   build:
-    runs-on: macos-14 # Apple Silicon Runner
+    runs-on: macos-15 # Apple Silicon Runner
 
     steps:
     - uses: actions/checkout@v4