SSH Keys user settings: Use GlCard

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/126988



Merged-by: Phil Hughes <me@iamphill.com>
Approved-by: Annabel Dunstone Gray <annabel.dunstone@gmail.com>
Approved-by: Phil Hughes <me@iamphill.com>
Co-authored-by: Sascha Eggenberger <seggenberger@gitlab.com>