Bump actions/checkout from 4 to 6 in the actions group - #22

`auto-activate-base` is deprecated. Please use `auto-activate`. If your installer does not use the `base` environment as the default environment, also add `activate-environment: base`.

warning libmamba You are using 'pip' as an additional package manager. Be aware that packages installed with 'pip' are managed independently from 'conda-forge' channel.