update broken links workflow

Author: rieckpil

.github/workflows/broken-links.yml

@@ -10,12 +10,12 @@ jobs:
     name: Check for broken links in README.md
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version: 18
 
       - name: Check for broken links
         run: |