Merge branch 'patch-4' into 'master'

Update alt text for alert activity feed image

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/179380



Merged-by: Marcel Amirault <mamirault@gitlab.com>
Approved-by: Marcel Amirault <mamirault@gitlab.com>
Reviewed-by: Marcel Amirault <mamirault@gitlab.com>
Co-authored-by: Betty Godier <engineer@betty.dev>
Co-authored-by: Betty Godier <7371210-betty-godier@users.noreply.gitlab.com>