[llvm] [mlir] [mlir python] Add nanobind support for standalone dialects. (PR #117922)

[Stella Laurenzo via llvm-commits]

stellaraccident wrote:

> I don't think the bots are using the requirements.txt from the repo still (unfortunately), we'll likely have to manually re-deploy images instead.

I thought that as well, but it appears to be: https://github.com/llvm/llvm-project/blob/main/.ci/monolithic-linux.sh#L48

Is there somewhere else to look?

https://github.com/llvm/llvm-project/pull/117922