Consider replacing conda and poetry with uv

[ian-r-rose]

This project has been gaining a lot of steam recently. It might be a good single-tool replacement for conda and poetry. A few potential benefits to switching:

1. Manage python dependencies with a single tool instead of a few
2. Much faster dependency resolution than conda or poetry
3. (maybe) easier to reason-about virtual environments

A possible downside: conda-forge is still a really good package repository for some more difficult-to-install packages, such as geopandas. It may be that we try uv out and it hits some difficulties with different binaries