Bump actions/checkout from v1 to v2.3.4

Bumps [actions/checkout](https://github.com/actions/checkout) from v1 to v2.3.4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v1...5a4ac90)

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

Author: dependabot[bot]

.github/workflows/nodejs.yml

@@ -10,7 +10,7 @@ jobs:
                 - 10.x
                 - 12.x
         steps:
-        - uses: actions/checkout@v1
+        - uses: actions/checkout@v2.3.4
         - uses: actions/[email protected]
           with:
               node-version: ${{ matrix.node-version }}