Version the Let's Encrypt article

[guardrex]

Fixes #35611

Thanks @danielwertheim! 🚀

Here's the article ...

https://learn.microsoft.com/en-us/aspnet/core/fundamentals/servers/yarp/lets-encrypt?view=aspnetcore-9.0

@natemcmaster, Dan ... Archived mid-.NET 9, so I marked the article for up to 8.0. Is that what you'd like to do here?

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aspnetcore/fundamentals/servers/yarp/lets-encrypt.md	aspnetcore/fundamentals/servers/yarp/lets-encrypt

[danielwertheim]

Don’t really think official Microsoft docs should link to unmaintained solutions at all, especially when it comes to security related features. If kept for history. It should clearly state that it’s not recommended anymore.

If I could wish whatever I want, then the team behind YARP would make an official and supported solution for this.

[guardrex]

It's ultimately up to Dan. He calls the shots on what external tech to support in the docs.

It should clearly state that it’s not recommended anymore.

It would only appear in the 8.0 or earlier doc set. When loaded, a message tells readers that the ASP.NET Core framework is no longer supported after the framework loses support. However, Dan may ask me to add a special note to the top of the article telling readers that the package is no longer supported. That's an easy update for the PR.

[danroth27]

I think we don't want this article to be part of our docs for supported .NET versions (.NET 8 and later).

For older .NET versions, I like the idea of adding a note to state that the LettuceEncrypt package is archived and no longer supported, so it is no longer recommended.

[guardrex]

Cool ... I'll take care of this by EOD.

It will be versioned <=7.0, and I'll add a NOTE under the H1.