Update ci.yml

Author: GlebChili

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.0.0
+        uses: actions/checkout@v2.3.4
 
       - name: Setup .NET SDK
         uses: actions/setup-dotnet@v1.7.2