Upgrade postgres in docker compose

[schbetsy]

Changes

• Upgrade postgres in docker-compose from 16 to 17. Postgres 16 was having a failure where it would stall indefinitely on a specific setup step. This update seems to resolve it.

Testing

1. Front-end tests in GH Actions, which depend on docker-compose, should pass
2. locally, docker compose build and docker compose up should successfully bring up the application.

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)
• Passes all existing automated tests
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future todos are captured in comments
• Project documentation has been updated
• Reviewers requested with the Reviewers tool ➡️