Bump zookeeper from 3.4.8 to 3.4.14 (#158)

Bumps zookeeper from 3.4.8 to 3.4.14.

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

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diff --git a/pom.xml b/pom.xml
index 42ad5ee..bb9b5d1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -61,7 +61,7 @@
     <maven.compiler.target>11</maven.compiler.target>
     <releaseProfiles>fluo-recipes-release</releaseProfiles>
     <spark.version>2.4.6</spark.version>
-    <zookeeper.version>3.4.8</zookeeper.version>
+    <zookeeper.version>3.4.14</zookeeper.version>
   </properties>
   <dependencyManagement>
     <dependencies>