[ci] Upgrade macOS CI

Author: salkinium

.github/workflows/macos.yml

@@ -8,12 +8,12 @@ concurrency:
 
 jobs:
   macos_testing:
-    runs-on: macos-13
+    runs-on: macos-15
 
     steps:
-      - uses: maxim-lobanov/setup-xcode@v1
-        with:
-          xcode-version: '15.2'
+      # - uses: maxim-lobanov/setup-xcode@v1
+      #   with:
+      #     xcode-version: '15.2'
 
       - name: Setup environment - Brew tap
         run: |