chore(deps): bump actions/setup-node from 6 to 6.4.0

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 6 to 6.4.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v6...v6.4.0)

---
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>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@v6.4.0
         with:
           node-version: 22
           cache: npm

.github/workflows/deploy.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: actions/configure-pages@v6
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@v6.4.0
         with:
           node-version: 22
           cache: npm