Upgrade zookeeper to 3.4.14

Change-Id: I4c5148d696e26a10f3c5114b4949e2563bf415fa
diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index 296b39e..92389c7 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -83,6 +83,6 @@
 
     maven_jar(
         name = "zookeeper",
-        artifact = "org.apache.zookeeper:zookeeper:3.4.8",
-        sha1 = "933ea2ed15e6a0e24b788973e3d128ff163c3136",
+        artifact = "org.apache.zookeeper:zookeeper:3.4.14",
+        sha1 = "c114c1e1c8172a7cd3f6ae39209a635f7a06c1a1",
     )