Upgrade PostgreSQL to latest version in the docker compose context

[tdruez]

Upgrade a PostgreSQL major version is a bit more involved as the data needs to be migrated as well.

https://betterprogramming.pub/how-to-upgrade-your-postgresql-version-using-docker-d1e81dbbbdf9 https://thomasbandt.com/postgres-docker-major-version-upgrade

[pombredanne]

Please make sure to sync up with PurlDB with @JonoYang