ci: Use setup-python action on macOS

.github/workflows/build.yml

@@ -271,6 +271,9 @@ jobs:
         name: src.tar.gz
     - name: Extract source package
       run: tar xf src.tar.gz
+    - uses: actions/[email protected]
+      with:
+        python-version: '3.12'
     - name: Install dependencies
       run: |
         export HOMEBREW_NO_AUTO_UPDATE=1
@@ -281,7 +284,7 @@ jobs:
           dylibbundler \
           pkg-config \
           ninja
-        python3 -m pip install pyyaml requests
+        pip install pyyaml requests
     - name: Initialize compiler, library cache
       id: cache
       uses: actions/cache@v4