Updating a configuration

Hello!

I've managed to create a cluster configuration through the CLI (https://docs.aws.amazon.com/cli/latest/reference/kafka/create-configuration.html), and created a cluster that uses that configuration.

How would I go about updating a configuration ("create a new revision?"), and what impact would that have on a cluster?
I think I won't have to update the configuration often, and am mostly looking for the ability to react to operational changes (tune settings for performance, allow/disallow client behaviors such as deleting topics).

I'm not "bound" to using the CLI, so if there is a REST API endpoint I'd be fine with that.