chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/nodejs.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
       - uses: volta-cli/action@v1
       - run: npm ci --no-audit
       - run: npm run lint --if-present