Backend Validation of WL Items

[originalname51]

Describe the bug
A clear and concise description of what the bug is.
Watchlist Imports Date Without 0

To Reproduce
Steps to reproduce the behavior:
Import watchlist, review wl_item database, review dob field.

Expected behavior
back end will throw an exception when an incorrect date is presented instead of accepting it.
e.g. 1982-02-02 instead of 1982-2-2

Additional context
UI Companion ticket:
US-CBP/GTAS-UI#654