Bump actions/setup-node from 3.7.0 to 3.8.0 (#7622)

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 3.7.0 to 3.8.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v3.7.0...v3.8.0)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

polkadot/.github/workflows/check-licenses.yml

@@ -9,7 +9,7 @@ jobs:
     steps:
       - name: Checkout sources
         uses: actions/checkout@v3
-      - uses: actions/setup-node@v3.7.0
+      - uses: actions/setup-node@v3.8.0
         with:
           node-version: '18.x'
           registry-url: 'https://npm.pkg.github.com'