ci(release): run universal_macos build on M1 (#27505)

Run the release workflow on macos-14 to use faster M1 runners.

Lock the deployment target to the oldest supported version (11.0,
due to libuv support) instead of relying on the host OS version.

.github/scripts/build_universal_macos.sh

@@ -1,6 +1,6 @@
 #!/bin/bash -e
 
-MACOSX_DEPLOYMENT_TARGET="$(sw_vers -productVersion | cut -f1 -d.)"
+MACOSX_DEPLOYMENT_TARGET=11.0
 export MACOSX_DEPLOYMENT_TARGET
 cmake -S cmake.deps -B .deps -G Ninja \
   -D CMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} \

.github/workflows/release.yml

@@ -60,7 +60,7 @@ jobs:
           printf 'END\n' >> $GITHUB_OUTPUT
 
   macOS:
-    runs-on: macos-12
+    runs-on: macos-14
     steps:
       - uses: actions/checkout@v4
         with: