Upgrade postgres to 15.6 in preparation for the production upgrade

[marcospri]

For:

• https://github.com/hypothesis/playbook/issues/1147

Testing and local env setup

If you don't have the service running you can just

make services dev

and the right postgres version will start.

If you do have a container running the upgrade will stop not upgrade it's contents, we can nuke the current postgres volume:

• Find the the volume ID:

docker inspect -f '{{ .Mounts }}' checkmate-postgres-1
[{volume e22d1a81e263ceb8a63b29a14bc7ec2dbe9f023e7c05742cba6694a4999a6076 /var/lib/docker/volumes/e22d1a81e263ceb8a63b29a14bc7ec2dbe9f023e7c05742cba6694a4999a6076/_data /var/lib/postgresql/data local  true }]

• Stop the container

docker compose down

• And remove the volume:

docker volume rm e22d1a81e263ceb8a63b29a14bc7ec2dbe9f023e7c05742cba6694a4999a6076

• Start the DB and server

make services dev