chore: cleanup usings and run dotnet format

test/Blog.Tests/GlobalUsings.cs

@@ -1,5 +1,8 @@
 global using System.IO.Abstractions;
 global using System.Net;
+global using System.ServiceModel.Syndication;
+global using System.Text;
+global using System.Xml;
 
 global using Blog.Posts;
 
@@ -10,10 +13,10 @@ global using Microsoft.AspNetCore.Hosting.Server;
 global using Microsoft.AspNetCore.Mvc.Testing;
 global using Microsoft.Extensions.DependencyInjection;
 global using Microsoft.Extensions.Hosting;
+global using Microsoft.Extensions.Logging;
 global using Microsoft.Extensions.Options;
 global using Microsoft.Playwright;
 global using Microsoft.Playwright.NUnit;
-global using Microsoft.Extensions.Logging;
 
 global using Moq;