Merge pull request #276 from alallier/renovate/actions-checkout-2.x

Update actions/checkout action to v2

Author: alallier

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
         node-version: [12.x, 14.x, 16.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v1
         with: