Update known-dependencies.txt

Author: pjfanning

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-3.5.9.jar
-zookeeper-jute-3.5.9.jar
+zookeeper-3.8.4.jar
+zookeeper-jute-3.8.4.jar
 zstd-jni-1.4.5-6.jar
 zstd-jni-1.5.0-4.jar