chore(deps): bump actions/setup-node from 4.1.0 to 4.2.0 (MisskeyIO#918)

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4.1.0 to 4.2.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v4.1.0...v4.2.0)

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

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

.github/workflows/validate-api-json.yml

@@ -30,7 +30,7 @@ jobs:
       with:
         run_install: false
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4.1.0
+      uses: actions/setup-node@v4.2.0
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'pnpm'