Merge pull request #5 from vectorize-io/dependabot/maven/org.apache.zookeeper-zookeeper-3.9.4

Bump org.apache.zookeeper:zookeeper from 3.9.3 to 3.9.4

Author: cdbartholomew

pom.xml

@@ -60,7 +60,7 @@
         <jsonassert.version>1.5.1</jsonassert.version>
         <awaitility.version>4.2.0</awaitility.version>
         <curator.version>5.6.0</curator.version>
-        <zookkeeper.version>3.9.3</zookkeeper.version>
+        <zookkeeper.version>3.9.4</zookkeeper.version>
     </properties>
     <dependencyManagement>
         <dependencies>