Automated Spec Update (#383)

55ae3f7008099fe4776e12265ccb9c9214305ce9

 Change Notes:

team_log_generated Namespace:
- Add EmailIngestPolicy union
- Add EmailIngestReceiveFileDetails, EmailIngestPolicyChangedDetails, EmailIngestReceiveFileType, and EmailIngestPolicyChangedType structs
- Update EventDetails union to include email_ingest_receive_file_details and email_ingest_policy_changed_details
- Update EventType union to include email_ingest_receive_file and email_ingest_policy_changed
- Update EventTypeArg to include email_ingest_receive_file and email_ingest_policy_changed

Co-authored-by: Brent Bumann <bbumann@dropbox.com>

Co-authored-by: DropboxBot <DropboxBot@users.noreply.github.com>
Co-authored-by: Brent Bumann <bbumann@dropbox.com>

Author: DropboxBot