Use mamba to install things during CI
This PR updates the CI scripts to use mamba
to install things, rather than conda
- it's faster most of the time, but I'm not sure how compatible the error handling is, and that sort of thing.
This PR updates the CI scripts to use mamba
to install things, rather than conda
- it's faster most of the time, but I'm not sure how compatible the error handling is, and that sort of thing.