Bump actions/setup-node from 2.3.0 to 2.4.0 (#50)

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 2.3.0 to 2.4.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v2.3.0...v2.4.0)

---
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/ci.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js
-        uses: actions/setup-node@v2.3.0
+        uses: actions/setup-node@v2.4.0
         with:
           node-version: 16
       - run: npm ci

.github/workflows/npmpublish.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2.3.0
+      - uses: actions/setup-node@v2.4.0
         with:
           node-version: 16
           registry-url: https://registry.npmjs.org/