Merge pull request #39 from sir-gon/renovate/actions-setup-node-6.x

Update actions/setup-node action to v6

Author: sir-gon

.github/workflows/markdown-lint.yml

@@ -21,7 +21,7 @@ jobs:
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
       - name: Set up Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: 22.x