Merge pull request #110 from serenity-js/renovate/actions-setup-node-6.x

chore(deps): update actions/setup-node action to v6

Author: jan-molak

.github/workflows/main.yaml

@@ -24,7 +24,7 @@ jobs:
           fetch-depth: 2
 
       - name: Setup Node
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: 24