fix: correct checkout version

Author: raphael-goetz

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
 
       - name: "Setup Node.js"
         uses: actions/setup-node@v4