fix macos ci config (macos-12 was deleted)

Author: chearon

.github/workflows/ci.yaml

@@ -58,7 +58,7 @@ jobs:
 
   macOS:
     name: Test on macOS
-    runs-on: macos-12
+    runs-on: macos-15
     strategy:
       matrix:
         node: [18.12.0, 20.9.0]
@@ -70,9 +70,7 @@ jobs:
       - name: Install Dependencies
         run: |
           brew update
-          brew install python3 || : # python doesn't need to be linked
-          brew install pkg-config cairo pango libpng jpeg giflib librsvg
-          pip install setuptools
+          brew install python-setuptools pkg-config cairo pango libpng jpeg giflib librsvg
       - name: Install
         run: npm install --build-from-source
       - name: Test