feat: start of clickhouse server version bump to 24.8

[fuziontech]

Problem

We need to upgrade CH versions that are deployed, this is the first step to make sure things don't break

Changes

Add Altinity 24.3 to the test matrix

👉 Stay up-to-date with PostHog coding conventions for a smoother review.

Does this work well for both Cloud and self-hosted?

How did you test this code?