build(deps): Bump actions/setup-node from v1 to v2.1.0

Bumps [actions/setup-node](https://github.com/actions/setup-node) from v1 to v2.1.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v1...1ae8f4b1fd89676f69b55d3dd6932b6df089ff7b)

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
       - uses: actions/setup-python@v2
         with:
           python-version: '3.8'
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2.1.0
         with:
           node-version: '12.x'
         if: "matrix.testenv == 'eslint'"