[BUG]: Drizzle should disconnect on process exit

### What version of `drizzle-orm` are you using?

0.29.2

### What version of `drizzle-kit` are you using?

0.20.9

### Describe the Bug

When running integration tests that connect to a docker-based db, it seems like the connection stays alive, thus making my tests hang forever. They all run and pass successfully, but then the process never ends. If I pass --forceExit to jest, it works properly, but this seems like a bandaid. I was able to do a more "correct" approach by "stopping" the test container that I am using (using `testcontainers`), but in Prisma, this step is not necessary.

Drizzle actually does something similar in its tests: https://github.com/drizzle-team/drizzle-orm/blob/main/integration-tests/tests/pg.test.ts

### Expected behavior

Upon shutdown signal being received, the drizzle client should be able to end its connection to any database that it may be connected to.

### Environment & setup

_No response_