Update Microsoft.AspNetCore.ApiAuthorization.IdentityServer dependencies (Duende.IdentityServer)

[marcoatribeiro]

Currently Microsoft.AspNetCore.ApiAuthorization.IdentityServer depends on Duende.IdentityServer version 5.2.0, but version 6.0.4 is available.
This outdated dependency is causing versioning conflict of other dependencies (e.g. AutoMapper).

[adityamandaleeka]

@blowdart

[HaoK]

Talked to @blowdart offline, plan will be to update the versions to 6.0, and document in the 7.0 readme the potential dataschema issues that users may run into: https://docs.duendesoftware.com/identityserver/v6/upgrades/v5.2_to_v6.0/

Something like: "We're updating to the latest supported Identity Server in our extensions. Either don't use the extensions and use their configuration methods or update your schema and use our helpers""

[HaoK]

Keeping this open to track both the docs and updating to 6.1

[HaoK]

Actually docs issue tracked in dotnet/AspNetCore.Docs#25902, will keep this open for 6.1 update tracking