Bump Microsoft.AspNetCore.TestHost from 6.0.22 to 8.0.0

Bumps [Microsoft.AspNetCore.TestHost](https://github.com/dotnet/aspnetcore) from 6.0.22 to 8.0.0.
- [Release notes](https://github.com/dotnet/aspnetcore/releases)
- [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md)
- [Commits](dotnet/aspnetcore@v6.0.22...v8.0.0)

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.TestHost
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

tests/AspNetCore.VersionInfo.Tests/AspNetCore.VersionInfo.Tests.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="6.0.22" />
+    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="8.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
     <PackageReference Include="Moq" Version="4.18.4" />
     <PackageReference Include="System.Text.Json" Version="6.0.8" />