Poor performance of ADI

[iamleeg]

Automated data ingestion is around an order of magnitude slower than it could be: importing all the US data into mongodb atlas should take ~12h but ingesting takes nearly two weeks. Some rough testing shows that the solution is to not use mongoose in the data-service, but we need to address two things:

1. reporting validation errors currently done by batchValidate using mongoose's schema validation (probably fixed by updating to mongodb 5)
2. keeping the confirmationDate and the confirmation event's date in sync is currently done by a mongoose trigger.

[abhidg]

Related: #2553