Apply isort to whole repository
@mtr please feel free to close this merge request if you think it is not a good idea. I thought it might be nice to unify things before the release.
We’ve updated our runner tagging system. If you’re using our shared runners for your CI pipelines, please review the new tags here: https://docs.mpcdf.mpg.de/bnb/220.html#new-tags-for-mpcdf-gitlab-runners
The old tags will remain valid until the end of February 2026.
@mtr please feel free to close this merge request if you think it is not a good idea. I thought it might be nice to unify things before the release.