chore(deps): bump actions/setup-node from 3 to 4

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 3 to 4.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v3...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>

.github/workflows/test-backend.yml

@@ -38,7 +38,7 @@ jobs:
         version: 8
         run_install: false
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v3.8.1
+      uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'pnpm'