Update actions/checkout action to v3 (#6)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

.github/workflows/deploy.yaml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Deploy
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
           node-version: 16