[llvm] [lldb] Configure pyright to the documented minimum python version (PR #162952)

[David Spickett via llvm-commits]

DavidSpickett wrote:

> There is a larger question of how this integrates with the rest of the python code in llvm.

I don't know if we need to think that far yet. Would people be ok accepting this as is, or prefer users of specific tools set their own settings until such time llvm endorses said tools?

And like you said, making CI results useful is probably not possible yet for some code.

https://github.com/llvm/llvm-project/pull/162952