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

[David Spickett via llvm-commits]

DavidSpickett wrote:

Understood. That would be another thing to consider usually but since we wouldn't be guaranteeing it won't have issues, implicitly being the latest version would be ok.

@JDevlieghere what do you think? Ok with this as an improvement for people that use pyright, but not endorsing it as "the tool" or claiming zero issues with it?

Eventually we'll do something around version/type checking where we might make such claims, but not in the short term.

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