chore(deps): update actions/setup-node action to v6 (#138)

Co-authored-by: felix-renovate[bot] <143542247+felix-renovate[bot]@users.noreply.github.com>

Author: felix-renovate[bot]

.github/workflows/validate-renovate.yml

@@ -16,7 +16,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5
+      - uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6
         with:
           node-version: lts/*