Bump Microsoft.AspNetCore.Mvc.Testing from 8.0.3 to 8.0.4 (#270)

Bumps [Microsoft.AspNetCore.Mvc.Testing](https://github.com/dotnet/aspnetcore) from 8.0.3 to 8.0.4.
- [Release notes](https://github.com/dotnet/aspnetcore/releases)
- [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md)
- [Commits](dotnet/aspnetcore@v8.0.3...v8.0.4)

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.Mvc.Testing
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Directory.Packages.props

@@ -26,7 +26,7 @@
     <PackageVersion Include="Microsoft.AspNetCore.Components.WebAssembly" Version="8.0.3" />
     <PackageVersion Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="8.0.3" PrivateAssets="all" />
     <PackageVersion Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="8.0.3" />
-    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.3" />
+    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.4" />
     <PackageVersion Include="Microsoft.AspNetCore.SignalR.Client" Version="8.0.3" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageVersion Include="Moq" Version="4.20.69" />