Fix partial update of checkout action

3.0-preview-update-workflow

Author: roanutil

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: macos-13
     environment: default
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Format lint
         run: swiftformat --lint .
       - name: Lint