Merge pull request #268 from Yoast/dependabot/github_actions/1.x/actions/setup-node-6

GH Actions: Bump actions/setup-node from 5 to 6

Author: jrfnl

.github/workflows/markdown.yml

@@ -48,7 +48,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Set up node and enable caching of dependencies
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: '20'