Merge branch 'thutterer/todos-snooze-until' into 'master'

Add `snoozed_until` datetime field to todos table

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/163348



Merged-by: Grzegorz Bizon <grzegorz@gitlab.com>
Approved-by: Pavel Shutsin <pshutsin@gitlab.com>
Approved-by: Missy Davies <mdavies@gitlab.com>
Approved-by: Grzegorz Bizon <grzegorz@gitlab.com>
Reviewed-by: Grzegorz Bizon <grzegorz@gitlab.com>
Reviewed-by: Pavel Shutsin <pshutsin@gitlab.com>
Reviewed-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Reviewed-by: Doug Stull <dstull@gitlab.com>
Co-authored-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Co-authored-by: Thomas Hutterer <thutterer@gitlab.com>