Fix in github action

Author: o.nadymov

.github/workflows/publish-to-nuget.yml

@@ -32,7 +32,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v2
       with:
-        dotnet-version: 7.0.x
+        dotnet-version: 8.0.x
 
     - name: Restore dependencies
       run: dotnet restore