Daily reports have wrong times

[ckniffen]

In production the daily reports always returns times as UTC at 23:00. This causes the times displayed to users to be in the future.

https://twitter.com/AverageJohnXRP/status/1745415012238196899

Preliminary triage:

• Set the type of the field to a "date" form "datetime with timezone" for the table daily_agreement
• I removed somewhere we set the hours to date.setHours(23, 0, 0, 0) https://github.com/ripple/validator-history-service/blob/main/src/api/routes/v1/validator-report.ts#L38
• Added env variable of TZ=UTC this forces the Postgres knex adapter to actually use UTC