Migrate groups Bootstrap utils to Tailwind

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/168239



Merged-by: Simon Knox <simon@gitlab.com>
Approved-by: Vanessa Otto <votto@gitlab.com>
Approved-by: Simon Knox <simon@gitlab.com>
Reviewed-by: Vanessa Otto <votto@gitlab.com>
Co-authored-by: Peter Hegman <phegman@gitlab.com>