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

Author: renovate[bot]

.github/workflows/ci-frourio.yml

@@ -34,7 +34,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 24
       - uses: actions/cache@v4