Update email deliveries script to include email action

[mitchellhenke]

🛠 Summary of changes

Follow-up to #8691 to include the type of email in the result. Example output:

+--------------------------------------+-------------------------+--------------------------------------------------------------+-----------------------------+----------------+
| user_id                              | timestamp               | message_id                                                   | email_action                | events         |
+--------------------------------------+-------------------------+--------------------------------------------------------------+-----------------------------+----------------+
| aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa | 2023-08-23 12:00:00.000 | 0000000000000000-00000000-0000-0000-0000-000000000000-000000 | account_reset_granted       | Send, Delivery |
+--------------------------------------+-------------------------+--------------------------------------------------------------+-----------------------------+----------------+

[zachmargolis]

LGTM! You'll need to update spec/bin/oncall/email-deliveries_spec.rb too