Update version of checkout action

Author: cincuranet

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
     timeout-minutes: 120
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: .NET 10.0
         uses: actions/setup-dotnet@v5