Consider migrating away from lib/pq due do data race in context cancellation #6201
Description
The lib/pq library has served us well, but it's not very actively maintained and longstanding issues are still open.
Most recently we saw a CI failure and data race (most likely) due to context cancellation: https://github.com/coder/coder/actions/runs/4174798570/jobs/7228842443
This issue has been open since Jan 2021: lib/pq#1021
We use a lot of contexts in our codebase and it seems dangerous for us to have potential data races happening in the database layer due to a timeout happening somewhere.
A more actively maintained library, with new features, is jackc/pgx.