GH Actions: version update for actions/checkout (#104)

Co-authored-by: jrfnl <[email protected]>

Author: jrfnl

.github/workflows/csfix.yml

@@ -13,7 +13,7 @@ jobs:
     if: github.event.pull_request.head.repo.full_name == github.repository
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
       with:
         ref: ${{ github.head_ref }}