Bump events-broker version to v3.4.0.1

Bug: Issue 14593
Change-Id: I0c7e80d6150bb384e403c71ddfb5c8287907c270

external_plugin_deps.bzl

diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index 77e9d52..0833f02 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -9,6 +9,6 @@
 
     maven_jar(
         name = "events-broker",
-        artifact = "com.gerritforge:events-broker:3.4.0-rc2",
-        sha1 = "f72b4166e6d785fd1a41c997a4ffb14461dd7d87",
+        artifact = "com.gerritforge:events-broker:3.4.0.1",
+        sha1 = "2d406afa8787621442d855e4b458c97bd24f1198",
     )