CI: Update deprecated macos-13 to macos-15-intel (#16197)

Author: straight-shoota

.github/workflows/macos.yml

@@ -19,7 +19,7 @@ jobs:
     strategy:
       matrix:
         include:
-        - runs-on: macos-13
+        - runs-on: macos-15-intel
           arch: x86_64-darwin
         - runs-on: macos-14
           arch: aarch64-darwin