poetry env cleanup

[rtreddick]

I just cloned this repo and ran in the devcontainer this morning. I see the pyproject.toml was just udpated a couple days ago: bf827dd

I'm sorry I lost the exact error message, but I think it was something about 'lock file has changed significantly'. I ran poetry lock and poetry install and got past that issue, but then also there were several missing dependencies:

cachetools = "^5.5.0"
uvicorn = "^0.34.0"
aiostream = "^0.6.4"

After running poetry add for these dependencies, I was able to successfully run the example! Just seems like there is a little environment cleanup to do.