CI: Update build-project workflow to use Xcode 15.4 for macOS builds

.github/workflows/build-project.yaml

@@ -80,8 +80,8 @@ jobs:
           : Set Up Environment 🔧
           if (( ${+RUNNER_DEBUG} )) setopt XTRACE
 
-          print '::group::Enable Xcode 15.2'
-          sudo xcode-select --switch /Applications/Xcode_15.2.app/Contents/Developer
+          print '::group::Enable Xcode 15.4'
+          sudo xcode-select --switch /Applications/Xcode_15.4.app/Contents/Developer
           print '::endgroup::'
 
           print '::group::Clean Homebrew Environment'