ci: Add releases for linux-riscv64

[luhenry]

Description, Motivation and Context

This project is a dependency of k0s which is working on being built, tested and released on linux-riscv64 [1].

RISC-V is gaining momentum especially in the embedded and edge world.

[1] k0sproject/k0s#7414

Checklist

• New and existing tests pass locally with introduced changes.
• Tests for the changes have been added (for bug fixes / features)
• The commit message(s) are informative and highlight any breaking changes
• Any documentation required has been added/updated. For changes to https://troubleshoot.sh/ create a PR here

Does this PR introduce a breaking change?

• Yes
• No

[luhenry]

I verified it works at https://github.com/luhenry/troubleshoot/actions/runs/24255114937/job/70824588808

[twz123]

Oh, I didn't notice that troubleshoot is no longer released for RISC-V. This used to be the case, back in the day 🙈 (#1356)

[luhenry]

It was removed with #1873. There is no comments in the relevant commits: 58e30c29 and 1fa7a7d3. @marccampbell @NoaheCampbell would you remember why?

[laverya]

Hello there! I do have some context as to why we removed the linux-riscv64 build - apparently despite it compiling it didn't actually work properly. I don't think we have any objection to reincluding it, but we need to figure out some way to test on riscv64 first.

[laverya]

I'm working to add minimal testing for the various linux architectures here: #2016

[luhenry]

I tested locally on RISC-V hardware and the whole of make all + make test did pass, so I'm confident 🙂

[luhenry]

Thank you 🎉

[luhenry]

@laverya would you know when you expect to do the next release? Eager to fix k0s to make use of troubleshoot on riscv64.