Update Background Job To Look At IDs

[asheliahut]

The background job currently looks at the Start Date to determine whether a new award for a tracked recipient is new.
This thinking is flawed and should actually check against the list of saved IDs in the Awards table of the database under the column usaSpendingAwardId. This way if a new id is seen it will then get shown to the slack channel accordingly.

line 22 of background-jobs/check-latest-awards.ts needs updating to pull only all the award IDs and the UEI of the recpient used for searching.

line 37 onwards in the same file until line 52 needds to be replaced with new logic to check against ids in.