Merge branch '510454-icon-color' into 'master'

Use icon variants instead of styling icons as text on the repository view

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/179481



Merged-by: Lee Tickett <ltickett@gitlab.com>
Approved-by: Sascha Eggenberger <seggenberger@gitlab.com>
Approved-by: Marina Mosti <mmosti@gitlab.com>
Approved-by: Deepika Guliani <dguliani@gitlab.com>
Reviewed-by: Sascha Eggenberger <seggenberger@gitlab.com>
Co-authored-by: Manuel Schönlaub <manuel.schoenlaub@gmail.com>