update xcode on macos

Author: joshuawright11

.github/workflows/test.yml

@@ -13,6 +13,9 @@ jobs:
         env:
             DEVELOPER_DIR: /Applications/Xcode_16.1.app/Contents/Developer
         steps:
+            - uses: maxim-lobanov/setup-xcode@v1
+              with:
+                xcode-version: latest-stable
             - uses: actions/checkout@v3
             - name: Build
               run: swift build