Use events-broker version 3.5.0-alpha-202108041529

Bug: Issue 14852
Change-Id: I7e537ca7ab967c29052f54ced48dee311477084b

external_plugin_deps.bzl

diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index 89e84bc..efe7780 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -16,8 +16,8 @@
 
     maven_jar(
         name = "events-broker",
-        artifact = "com.gerritforge:events-broker:3.5.0-alpha-202107290338",
-        sha1 = "243ecb0e13c6532a9e3e7ab03d7318cbf350ec77",
+        artifact = "com.gerritforge:events-broker:3.5.0-alpha-202108041529",
+        sha1 = "309fe8cc08c46593d9990d4e5c448cc85e5a62b0",
     )
 
     maven_jar(