chore: drop ZooKeeper 3.8.4

[NickLarsenNZ]

Description

Part of #832.

• Remove ZooKeeper 3.8.4 (it was deprecated in SDP 24.7).
• Bump to Java 17 runtime for ZooKeeper 3.9.2 (still needs to be built with Java 11).

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

- [x] ~Changes are OpenShift compatible~ No change
- [x] ~All added packages (via microdnf or otherwise) have a comment on why they are added~ None added
- [x] ~Things not downloaded from Red Hat repositories should be mirrored in the Stackable repository and downloaded from there~ None added
- [x] ~All packages should have (if available) signatures/hashes verified~ None added
- [x] Add an entry to the CHANGELOG.md file
- [x] ~Integration tests ran successfully~ No new versions to test

TIP: Running integration tests with a new product image

The image can be built and uploaded to the kind cluster with the following commands:

bake --product <product> --image-version <stackable-image-version>
kind load docker-image <image-tagged-with-the-major-version> --name=<name-of-your-test-cluster>

See the output of bake to retrieve the image tag for <image-tagged-with-the-major-version>.

[maltesander]

LGTM!