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

Author: renovate[bot]

.github/workflows/lint-format.yml

@@ -14,7 +14,7 @@ jobs:
         with:
           python-version: '3.14'
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 'lts/*'
       - name: Install Python dev dependencies