deps: bump actions/setup-node from 6.3.0 to 6.4.0

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 6.3.0 to 6.4.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/53b83947a5a98c8d113130e565377fae1a50d02f...48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: 6.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/validate-renovate.yml

@@ -20,7 +20,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v5
 
       - name: Setup Node.js
-        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
         with:
           node-version: latest