Update tests to work with the now legacy WebHostBuilder

- I accidentally had the updated Program locally and that was why tests were working for me locally

test/Server.IntegrationTest/Server.cs

@@ -1,7 +1,6 @@
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Mvc.Testing;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.Logging;
+using Microsoft.AspNetCore.TestHost;
 
 namespace Bit.Server.IntegrationTest;
 
@@ -13,32 +12,34 @@ public class Server : WebApplicationFactory<Program>
     public bool? WebVault { get; set; }
     public string? AppIdLocation { get; set; }
 
-    protected override void ConfigureWebHost(IWebHostBuilder builder)
+    protected override IWebHostBuilder? CreateWebHostBuilder()
     {
-        base.ConfigureWebHost(builder);
-
-        builder.ConfigureLogging(logging =>
+        var args = new List<string>
         {
-            logging.SetMinimumLevel(LogLevel.Debug);
-        });
-
-        var config = new Dictionary<string, string?>
-        {
-            {"contentRoot", ContentRoot},
-            {"webRoot", WebRoot},
-            {"serveUnknown", ServeUnknown.ToString().ToLowerInvariant()},
+            "/contentRoot",
+            ContentRoot ?? "",
+            "/webRoot",
+            WebRoot ?? "",
+            "/serveUnknown",
+            ServeUnknown.ToString().ToLowerInvariant(),
         };
 
         if (WebVault.HasValue)
         {
-            config["webVault"] = WebVault.Value.ToString().ToLowerInvariant();
+            args.Add("/webVault");
+            args.Add(WebVault.Value.ToString().ToLowerInvariant());
         }
 
         if (!string.IsNullOrEmpty(AppIdLocation))
         {
-            config["appIdLocation"] = AppIdLocation;
+            args.Add("/appIdLocation");
+            args.Add(AppIdLocation);
         }
 
-        builder.UseConfiguration(new ConfigurationBuilder().AddInMemoryCollection(config).Build());
+        var builder = WebHostBuilderFactory.CreateFromTypesAssemblyEntryPoint<Program>([.. args])
+            ?? throw new InvalidProgramException("Could not create builder from assembly.");
+
+        builder.UseSetting("TEST_CONTENTROOT_SERVER", ContentRoot);
+        return builder;
     }
 }