The person you replied to doesn't know what they're talking about. It's just an example password used for running a local empty DB for development and has nothing to do with production or even test databases.

You can see this in the readme: https://archive.softwareheritage.org/browse/origin/directory/?origin_url=https%3A%2F%2Fgithub.com%2Fgsa-tts-archived%2Fai-gov-api

See my longer previous comment if you want to know more. And again, not defending this project, but this whole comment chain was just misinformation.