Part of #1066.

The ZK 3.9.4 vote has failed but @lfrancke suggest backporting the following:

• https://issues.apache.org/jira/browse/ZOOKEEPER-4846
• https://issues.apache.org/jira/browse/ZOOKEEPER-4921
  • but only if we end up reusing patched libraries from one build in our other products (re @dervoeti )
• https://issues.apache.org/jira/browse/ZOOKEEPER-4925
  • A data loss issue introduced in 3.9.3
  • not merged upstream, worth watching though

Update tasks

• Backport ZOOKEEPER-4846
• Backport ZOOKEEPER-4921
• Backport ZOOKEEPER-4925

Related Pull Requests

• feat(zookeeper): backport ZOOKEEPER-4846, ZOOKEEPER-4921, ZOOKEEPER-4925 into Zookeeper 3.9.3 #1150

Acceptance

• Can build image (either locally, or in CI)
• Kuttl smoke tests passes (either locally, or in CI)
• Release notes written in a comment below (if we need to mention the patches)
• Applicable release-note label added to this issue

# See the latest version at https://pypi.org/project/image-tools-stackabletech/
pip install image-tools-stackabletech==0.0.16

bake --product zookeeper=x.y.z # where x.y.z is the new version added in this PR

kind load docker-image oci.stackable.tech/sdp/zookeeper:x.y.z-stackable0.0.0-dev

# Change directory into the zookeeper-operator repository and update the
# product version in tests/test-definition.yaml
./scripts/run-tests --test-suite smoke-latest # or similar

Please consider updating this template if these instructions are wrong, or
could be made clearer.