chore: bump actions/setup-node from 4.4.0 to 6.0.0

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4.4.0 to 6.0.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@49933ea...2028fbc)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/document-validation.yml

@@ -77,7 +77,7 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
 
       - name: Setup Node ${{ needs.get-node-version.outputs.version }}
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020  # v4.4.0
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903  # v6.0.0
         with:
           node-version: ${{ needs.get-node-version.outputs.version }}