Merge branch '504101-pg-timeout-on-old-webhook-logs' into 'master'

Add webhooks and webhook events (logs) to GraphQL

See merge request !205757



Merged-by: Sam Word <sword@gitlab.com>
Approved-by: Brian Williams <bwilliams@gitlab.com>
Approved-by: Keeyan Nejad <knejad@gitlab.com>
Approved-by: Diane Russel <drussel@gitlab.com>
Reviewed-by: Luke Duncalfe <lduncalfe@gitlab.com>
Reviewed-by: GitLab Duo <gitlab-duo@gitlab.com>
Reviewed-by: Keeyan Nejad <knejad@gitlab.com>