Bump zookeeper from 3.7.0 to 3.8.0
Bump zookeeper from 3.7.0 to 3.8.0

Bumps zookeeper from 3.7.0 to 3.8.0.

---
updated-dependencies:
- dependency-name: org.apache.zookeeper:zookeeper
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
jnidzwetzki/scalephant,jnidzwetzki/bboxdb,jnidzwetzki/bboxdb,jnidzwetzki/bboxdb,jnidzwetzki/scalephant