⬆️ Bump actions/setup-node from v1 to v2.1.2

Bumps [actions/setup-node](https://github.com/actions/setup-node) from v1 to v2.1.2.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v1...c6fd00c)

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

Author: dependabot[bot]

.github/workflows/CI.yml

@@ -38,7 +38,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/[email protected]
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2.1.2
         with:
           node-version: '12.x'
       - name: NPM install
@@ -55,7 +55,7 @@ jobs:
     steps:
       - uses: actions/[email protected]
       - uses: UziTech/action-setup-atom@v1
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2.1.2
         with:
           node-version: '12.x'
       - name: NPM install