fix: use macos-15-intel runner for Intel build

Author: anandprtp

.github/workflows/release.yml

@@ -206,7 +206,7 @@ jobs:
 
   build-macos-intel:
     name: Build macOS (Intel)
-    runs-on: macos-12
+    runs-on: macos-15-intel
     env:
       WAILS_VERSION: v2.12.0
     steps: