fix: bump actions/checkout to v4

Author: chrisg86

.github/workflow/test.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Node
         uses: actions/setup-node@v4