Bump Microsoft.AspNetCore.Authentication.AzureAD.UI from 3.1.3 to 3.1.5
Bump Microsoft.AspNetCore.Authentication.AzureAD.UI from 3.1.3 to 3.1.5

Bumps [Microsoft.AspNetCore.Authentication.AzureAD.UI](https://github.com/aspnet/AspNetCore) from 3.1.3 to 3.1.5.
- [Release notes](https://github.com/aspnet/AspNetCore/releases)
- [Changelog](https://github.com/dotnet/aspnetcore/blob/master/docs/CrossRepoBreakingChanges.md)
- [Commits](https://github.com/aspnet/AspNetCore/compare/v3.1.3...v3.1.5)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
onovotny/SignService,onovotny/SignService,onovotny/SignService