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

[Aiden Grossman via llvm-commits]

boomanaiden154 wrote:

> Do you mean version of Python or of the tool (pyright)? Presumably Python.

Sorry. Meant pyright. I thought this was configuring a pyright version since I didn't look very closely at the patch. :sweat:

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