updated poetry.lock

[kristiankyvik]

It seems like this PR (#984) forgot to update the poetry.lock file.

I was running into the following error when running poetry install locally:

Warning: poetry.lock is not consistent with pyproject.toml. You may be getting improper dependencies. Run `poetry lock [--no-update]` to fix it.

Because gpt-engineer depends on langchain_openai (*) which doesn't match any versions, version solving failed.

I fixed this by running poetry update.

The docs build seems to be also failing because of this issue: https://readthedocs.org/projects/gpt-engineer/builds/23220334/