fix format CI

Author: stephencelis

.github/workflows/format.yml

@@ -12,7 +12,7 @@ concurrency:
 jobs:
   swift_format:
     name: swift-format
-    runs-on: macos-12
+    runs-on: macos-13
     steps:
       - uses: actions/checkout@v3
       - name: Xcode Select