Merge changes from topic "revert-312871-centralize-stream-events-handling-JLRJXKYEBH"

* changes:
  Introduce InitStep
  Document numberOfSubscribers configuration
  Only publish stream events when sendStreamEvents is set.
  Revert "Remove publishing of stream events"
diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index eb44586..8a4bf7d 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:3.5.0-alpha-202107290338",
-        sha1 = "243ecb0e13c6532a9e3e7ab03d7318cbf350ec77",
+        artifact = "com.gerritforge:events-broker:3.5.0-alpha-202108041529",
+        sha1 = "309fe8cc08c46593d9990d4e5c448cc85e5a62b0",
     )