Merge branch 'caw-ws-add-actual-state-workspace-var-1-6' into 'master'

Add actual_state_updated_at column to workspaces table

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/184104



Merged-by: Michał Zając <mzajac@gitlab.com>
Approved-by: Michał Zając <mzajac@gitlab.com>
Reviewed-by: Chad Woolley <cwoolley@gitlab.com>
Co-authored-by: Chad Woolley <cwoolley@gitlab.com>