Bump actions/setup-node from 2.1.5 to 2.3.0 (#149)

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 2.1.5 to 2.3.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v2.1.5...v2.3.0)

---
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/nodejs.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
     - uses: actions/checkout@master
     - name: Setup Node.js
-      uses: actions/setup-node@v2.1.5
+      uses: actions/setup-node@v2.3.0
       with:
         node-version: ${{ matrix.node }}
     - name: install yarn