Bump actions/setup-node from 2.1.5 to 4.0.0

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 2.1.5 to 4.0.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v2.1.5...v4.0.0)

---
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/main.yml

@@ -9,7 +9,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Use Node 12
-        uses: actions/setup-node@v2.1.5
+        uses: actions/setup-node@v4.0.0
         with:
           node-version: 12.x