Dates on Reports - Report in PDT

**User Story**
As a user who downloads a report, I want to make sure I understand any discrepancy in the dates displayed in SIMS and the date in the reports.
For reference - see discussion in comments on [Institution-Specific Reports - COE Requests](https://app.zenhub.com/workspaces/student-information-management-system-5fce9df5aa1b45000e937014/issues/gh/bcgov/sims/3131)

**Acceptance Criteria**
- [ ] Convert all timestamp dates when downloaded as a report to PDT.

**Business Context**
- SIMS displays dates based on the user's local timezone.
- SIMS stores dates as UTC.
- Pacific Daylight Time (PDT) is 7 hours behind of Coordinated Universal Time (UTC)
- The difference in the stored time being in UTC (the default time used when pulling the date from the db) could end up displaying a different date to the user than what is shown to them in the UI.

No file or test is named. Start by locating the report-download timestamp handling, then compare it with the UI's local-time display and the UTC storage described here; done means every timestamp in downloaded reports is converted to PDT and the displayed date is consistent.

Written by the indexing model from the issue text.