[llvm] Workflows: Use new depot runners for x86 Linux release builds (PR #117111)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 commented:

Some nits so far.

It seems like there's a lot of additional complexity from having to support both single stage and multi stage builds? Is it possible to just do single stage builds on depot like we did for the container build?

https://github.com/llvm/llvm-project/pull/117111