Set up CI testing against SQL Server 2025 (and other versions) #36382
Description
We're starting to have quite a few features which require SQL Server 2025 (JSON, vector search...), but we still aren't testing on it.
My preferred solution here would be to simply install SQL Server 2025 via Docker on Linux; it would be fully self-serve, we wouldn't depend on any infrastructure or help from other teams and would be able to bump versions at will.