Add Apache Zookeeper 3.8.0

Update PGP key servers as suggested in https://github.com/docker-library/faq/pull/26

library/zookeeper

@@ -3,15 +3,20 @@ GitRepo: https://github.com/31z4/zookeeper-docker.git
 
 Tags: 3.5.9, 3.5
 Architectures: amd64, arm64v8
-GitCommit: 10a34d67458bd30a4f334166860d8213f84e97a7
+GitCommit: 928f1fa35d3414f31bb542b55891c8662b14b84a
 Directory: 3.5.9
 
 Tags: 3.6.3, 3.6
 Architectures: amd64, arm64v8
-GitCommit: 10a34d67458bd30a4f334166860d8213f84e97a7
+GitCommit: 928f1fa35d3414f31bb542b55891c8662b14b84a
 Directory: 3.6.3
 
-Tags: 3.7.0, 3.7, latest
+Tags: 3.7.0, 3.7
 Architectures: amd64, arm64v8
-GitCommit: 10a34d67458bd30a4f334166860d8213f84e97a7
+GitCommit: 928f1fa35d3414f31bb542b55891c8662b14b84a
 Directory: 3.7.0
+
+Tags: 3.8.0, 3.8, latest
+Architectures: amd64, arm64v8
+GitCommit: d91ba6412cbb31fdcafab477bbe0198930931124
+Directory: 3.8.0