GHA: always use Ninja on macos runners

It's installed by default on the macos runners now.

Closes #17115

.github/workflows/macos.yml

@@ -461,7 +461,7 @@ jobs:
             [ '${{ matrix.config }}' = 'SecureTransport' ] && options+=' -DCURL_USE_SECTRANSP=ON'
             [ -n '${{ matrix.macos-version-min }}' ] && options+=' -DCMAKE_OSX_DEPLOYMENT_TARGET=${{ matrix.macos-version-min }}'
             # would pick up nghttp2, libidn2, and libssh2
-            cmake -B bld -D_CURL_PREFILL=ON \
+            cmake -B bld -G Ninja -D_CURL_PREFILL=ON \
               -DCMAKE_UNITY_BUILD=ON -DCURL_TEST_BUNDLES=ON -DCURL_WERROR=ON \
               -DCMAKE_OSX_SYSROOT="${sysroot}" \
               -DCMAKE_C_COMPILER_TARGET="$(uname -m | sed 's/arm64/aarch64/')-apple-darwin$(uname -r)" \
@@ -501,7 +501,12 @@ jobs:
           grep -F '#define' bld/lib/curl_config.h | sort || true
 
       - name: 'build / ${{ matrix.build }}'
-        run: make -C bld V=1 VERBOSE=1
+        run: |
+          if [ '${{ matrix.build }}' = 'cmake' ]; then
+            cmake --build bld --verbose
+          else
+            make -C bld V=1
+          fi
 
       - name: 'curl version'
         run: bld/src/curl --disable --version