use v3.9.3 due to ZOOKEEPER-4820

Author: pjfanning

pom.xml

@@ -104,7 +104,7 @@
   <properties>
     <revision>1.6.0</revision>
 
-    <zookeeper.version>3.8.4</zookeeper.version>
+    <zookeeper.version>3.9.3</zookeeper.version>
     <curator.version>4.2.0</curator.version>
     <hadoop.version>3.3.4</hadoop.version>
     <hadoop-hdfs-client.artifact>hadoop-hdfs-client</hadoop-hdfs-client.artifact>

tool/dependencies/known-dependencies.txt

@@ -802,7 +802,7 @@ zipkin-2.23.2.jar
 zipkin-reporter-2.16.3.jar
 zipkin-reporter-brave-2.16.3.jar
 zjsonpatch-0.3.0.jar
-zookeeper-3.8.4.jar
-zookeeper-jute-3.8.4.jar
+zookeeper-3.9.3.jar
+zookeeper-jute-3.9.3.jar
 zstd-jni-1.4.5-6.jar
 zstd-jni-1.5.0-4.jar