ci(release): Use macos-14 for both portable arch builds

The configured macos-13 hosted runner is unavailable in this environment.
Build both arm64 and x64 portable artifacts on macos-14, which is valid now
that packaging fetches target-arch Node runtimes.

Co-Authored-By: Claude <noreply@anthropic.com>

Author: cameroncooke

.github/workflows/release.yml

@@ -232,7 +232,7 @@ jobs:
           - arch: arm64
             runner: macos-14
           - arch: x64
-            runner: macos-13
+            runner: macos-14
     runs-on: ${{ matrix.runner }}
     steps:
       - name: Checkout code