Initial master commit from kafka-events repo

Bug: Issue 14436
Change-Id: I02ab7eb67e0e1e67c4e4b70de80040abed4831db
diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index 61d20ad..e059b34 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -15,6 +15,6 @@
 
     maven_jar(
         name = "events-broker",
-        artifact = "com.gerritforge:events-broker:3.3.0-rc7",
-        sha1 = "5efe1c4a0f7c385b0ec95b8f9897248049c4173c",
+        artifact = "com.gerritforge:events-broker:3.4.0-rc0",
+        sha1 = "8c34c88103d4783eb4c4decde6d93541bc1cf064",
     )