Bump actions/setup-node from 2 to 4 (#7)

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 2 to 4.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v2...v4)

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

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

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
       - name: Install Yarn conditionally
         run: npm install yarn
       - name: Setup Node.js
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v4
         with:
           node-version: "18.12.1"
           cache-dependency-path: yarn.lock