Merge branch '503754-vsa-add-last_approved_at-event' into 'master'

VSA Add `last_approved_at` Event

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/175989



Merged-by: Felipe Cardozo <fcardozo@gitlab.com>
Approved-by: Ryan Cobb <rcobb@gitlab.com>
Approved-by: Michael Becker <mbecker@gitlab.com>
Approved-by: Adam Hegyi <ahegyi@gitlab.com>
Approved-by: Felipe Cardozo <fcardozo@gitlab.com>
Approved-by: Rémy Coutable <remy@rymai.me>
Reviewed-by: Rémy Coutable <remy@rymai.me>
Reviewed-by: Felipe Cardozo <fcardozo@gitlab.com>
Reviewed-by: Pavel Shutsin <pshutsin@gitlab.com>
Reviewed-by: Marc Shaw <mshaw@gitlab.com>
Reviewed-by: Michael Becker <mbecker@gitlab.com>
Co-authored-by: adruid <ataha@gitlab.com>