Merge branch 'hly-reduce-main-bundle-size' into 'master'

Remove duplicate `marked` NPM package

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/175433



Merged-by: Stanislav Lashmanov <slashmanov@gitlab.com>
Approved-by: Brett Walker <bwalker@gitlab.com>
Approved-by: Stanislav Lashmanov <slashmanov@gitlab.com>
Co-authored-by: Heinrich Lee Yu <heinrich@gitlab.com>