Update Zookeeper to 3.5.6

library/zookeeper

@@ -6,7 +6,7 @@ Architectures: amd64
 GitCommit: 5a82d0b90d055f39d50e0a64ae2e00da15f9b8b1
 Directory: 3.4.14
 
-Tags: 3.5.5, 3.5, latest
+Tags: 3.5.6, 3.5, latest
 Architectures: amd64
-GitCommit: 5a82d0b90d055f39d50e0a64ae2e00da15f9b8b1
-Directory: 3.5.5
+GitCommit: 8f8e8a6df4f56e00e7a7fb146c452e772fd1284a
+Directory: 3.5.6