ci: bump actions/checkout to v4

Author: checkout‑bot

.github/workflows/dependency_review.yml

@@ -16,7 +16,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Dependency review
         uses: ConsenSys/github-actions/js-dependency-review@main