[skip ci] Merge pull request #6 from redbaty/renovate/actions-checkout-4.x

Update actions/checkout action to v4

Author: mvmcjr

.github/workflows/nuget.yaml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Restore NuGet packages
       run: dotnet restore