Update Swift format workflow

Author: Matejkob

.github/workflows/format.yml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Select Xcode
-        run: sudo xcode-select -s /Applications/Xcode_15.4.app
+        run: sudo xcode-select -s /Applications/Xcode_16.1.app
 
       - name: Install swift-format
         run: brew install swift-format