ci: update macos arm64 runner image to macos-15

Author: Totto16

.github/workflows/build.yml

@@ -90,7 +90,7 @@ jobs:
 
           - name: MacOS (Arm64)
             os: macos
-            os-version: 14
+            os-version: 15
             arm: true
             shell: bash
             fatal_warnings: true