Support running commands that output to stderr

[fgsalomon]

First Check

• I added a very descriptive title to this issue.
• I used the GitHub search to find a similar issue and didn't find it.
• I already read and followed all the documentation and didn't find an answer.

Description

I expect to see logs of commands that output to stderr like uvicorn but it seems that lume can't handle them.

Operating System

macOS

Operating System Details

No response

lume Version

0.9.8

Python Version

3.12.7

Additional Context

No response