Bump actions/setup-node from v1 to v2.1.5

Bumps [actions/setup-node](https://github.com/actions/setup-node) from v1 to v2.1.5.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v1...46071b5)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/nodejs.yml

@@ -11,7 +11,7 @@ jobs:
                 - 12.x
         steps:
         - uses: actions/[email protected]
-        - uses: actions/setup-node@v1
+        - uses: actions/setup-node@v2.1.5
           with:
               node-version: ${{ matrix.node-version }}
         - run: npm run test:prepare && npm install-test