test: use Xcode 16.4

Author: OS-pedrogustavobilro

.github/workflows/prepare_release.yml

@@ -16,7 +16,7 @@ jobs:
         run: brew link --overwrite swiftlint || brew install swiftlint
 
       - name: Set up XCode 
-        run: sudo xcode-select --switch /Applications/Xcode_26.1.app
+        run: sudo xcode-select --switch /Applications/Xcode_16.4.app
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1