Bump zookeeper from 3.4.6 to 3.4.14

Bumps zookeeper from 3.4.6 to 3.4.14.

---
updated-dependencies:
- dependency-name: org.apache.zookeeper:zookeeper
  dependency-type: direct:production
...

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Author: dependabot[bot]

pom.xml

@@ -41,7 +41,7 @@
   <properties>
     <hadoop.version>2.7.3</hadoop.version>
     <hbase.version>1.1.9</hbase.version>
-    <zookeeper.version>3.4.6</zookeeper.version>
+    <zookeeper.version>3.4.14</zookeeper.version>
     <solr.version>4.10.4</solr.version>
     <spark.version>2.1.0</spark.version>
     <kafka.version>0.10.1.1</kafka.version>