Bump Duende IdentityServer (and update template typos)

[maartenba]

Bump version numbers and update a few typos.

[Copilot]

Pull Request Overview

This PR updates the project from IdentityServer4 to Duende IdentityServer, bumping the version and correcting related documentation and UI text. The changes include updating package versions, fixing typos, and updating references to point to the correct Duende repositories and documentation.

• Bump Duende IdentityServer version from 7.1.1 to 7.3.0
• Update UI text and links to reference Duende instead of IdentityServer4
• Fix spelling error in logout confirmation message

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
Directory.Packages.props	Updates DuendeVersion from 7.1.1 to 7.3.0
src/Identity.API/Views/Home/Index.cshtml	Updates welcome message and links to reference Duende IdentityServer
src/Identity.API/Views/Account/Logout.cshtml	Fixes typo "logut" to "logout"
src/Identity.API/Configuration/Config.cs	Updates documentation URL to Duende's documentation

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[DevTKSS]

@maartenba hey there, I recognized the old usings in the repo and found this PR of yours. Could you please add the eShop/src/ClientApp/* PackageReferences and usings to the updated contents of this PR for completeness? If it only updates the IdentityAPI but the ClientApp stays on the old reference, this might result in problems when breaking changes are introduced in newer package versions 👍

[maartenba]

Sure thing! Force pushed an update getting these all to latest version @DevTKSS

[DevTKSS]

@maartenba
For the IdentityServer using parts I heared that this now requires any License (Community at least) but not sure if the sampling project or repo readme contains already the reference to those docs/websites where the user can get one.
Could you check?

[maartenba]

Nothing in README I can see. Want me to add?

## Duende IdentityServer

The eShop application uses [Duende IdentityServer](https://duendesoftware.com/products/identityserver/), which is software that may require a license when deploying to a production environment. Depending on revenue, a free [community edition](https://duendesoftware.com/products/communityedition) is available for production use.

For development, testing, and general exploration, no license is needed.

[maartenba]

Added to the PR @DevTKSS