Always set POSTGRES_PASSWORD in docker-compose.yml

[jeancochrane]

Overview

GitHub Actions always requires POSTGRES_PASSWORD be set in order to run a Postgres service. This isn't necessarily well-documented, but it tripped me up and was difficult to debug, so I think we should consider always setting POSTGRES_PASSWORD in the config file here.

Testing Instructions

• Not really sure if this needs detailed testing. I tested it in https://github.com/datamade/mn-election-archive/ and it worked well.