Get lockbud running again

[michaelsproul]

Description

A while ago the author of lockbud found a bunch of nice deadlocks in Lighthouse.

• https://github.com/BurtonQin/lockbud

We are still encountering deadlocks occasionally, see:

• Fix deadlock on block cache. #6412

It would be great if we could run lockbud on CI to detect them statically.

Steps to resolve

Last time we tried lockbud it had bitrotted and was incapable of compiling Lighthouse.

It seems there have been updates in the last few weeks that might make it work with more recent compiler versions!

[eserilev]

Lockbud's github action is still pinned to nightly-2023-04-11

I've opened a PR here to update the github action to the latest supported nightly version (2024-05-21)
BurtonQin/lockbud#68

[eserilev]

Closed in #6470