Bump actions/checkout from v1 to v2.3.1

Bumps [actions/checkout](https://github.com/actions/checkout) from v1 to v2.3.1.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v1...28c7f3d)

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

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
       REACT_APP_SKIP_INPUT: false
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2.3.1
       - name: Fetch Cypress deps
         run: sudo apt-get install libgtk2.0-0 libgtk-3-0 libnotify-dev libgconf-2-4 libnss3 libxss1 libasound2 libxtst6 xauth xvfb
       - name: Build enviroment