Bump actions/setup-node from v2.1.1 to v2.1.2

Bumps [actions/setup-node](https://github.com/actions/setup-node) from v2.1.1 to v2.1.2.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v2.1.1...c6fd00ceb9747fb23ffdf72987450a2664414867)

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

.github/workflows/ci.yml

@@ -42,7 +42,7 @@ jobs:
       - uses: actions/setup-python@v2.1.2
         with:
           python-version: '3.8'
-      - uses: actions/setup-node@v2.1.1
+      - uses: actions/setup-node@v2.1.2
         with:
           node-version: '12.x'
         if: "matrix.testenv == 'eslint'"