test: Reduce number of smoke tests by skipping Zookeeper 3.9.2

[sbernauer]

Description

Follow-up of #657.
https://testing.stackable.tech/job/hdfs-operator-it-weekly/48/ and https://testing.stackable.tech/job/hdfs-operator-it-weekly/49/ took more than 6 hours, so longern than our replicated cluster TTL, thus failing

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

# Author
- [ ] Changes are OpenShift compatible
- [ ] CRD changes approved
- [ ] CRD documentation for all fields, following the [style guide](https://docs.stackable.tech/home/nightly/contributor/docs/style-guide).
- [ ] Helm chart can be installed and deployed operator works
- [ ] Integration tests passed (for non trivial changes)
- [ ] Changes need to be "offline" compatible

# Reviewer
- [ ] Code contains useful comments
- [ ] Code contains useful logging statements
- [ ] (Integration-)Test cases added
- [ ] Documentation added or updated. Follows the [style guide](https://docs.stackable.tech/home/nightly/contributor/docs/style-guide).
- [ ] Changelog updated
- [ ] Cargo.toml only contains references to git tags (not specific commits or branches)

# Acceptance
- [ ] Feature Tracker has been updated
- [ ] Proper release label has been added
- [ ] [Roadmap](https://github.com/orgs/stackabletech/projects/25/views/1) has been updated

[maltesander]

LGTM!

[Techassi]

This honestly should be blocked. The tests shouldn't take ages to complete and we must test all supported versions without cutting back on the overall scope of testing to "ship around" this issue.

[NickLarsenNZ]

This honestly should be blocked. The tests shouldn't take ages to complete and we must test all supported versions without cutting back on the overall scope of testing to "ship around" this issue.

IMO, this one is fine for 25.3.0. Zookeeper barely changes between patch versions, and should be backward compatible anyway.

We can work on optimising tests after the release so that we don't need to make these sacrifices again.

[Techassi]

I'm fine with removing it for now (to unblock the 25.3.0 release), but we should really investigate how we can improve test run times.

[sbernauer]

+1 on both of you, thanks!