Build events-broker module on stable-3.13

Change-Id: I1bf0f81ad24a01448cd39e13afe1ed16563b8e4e
diff --git a/jenkins/gerrit-bazel-module-events-broker.yaml b/jenkins/gerrit-bazel-module-events-broker.yaml
index 8f643b3..d6c35a7 100644
--- a/jenkins/gerrit-bazel-module-events-broker.yaml
+++ b/jenkins/gerrit-bazel-module-events-broker.yaml
@@ -4,6 +4,7 @@
       - 'module-{name}-bazel-{branch}':
           branch:
             - master
+            - stable-3.13
             - stable-3.12
             - stable-3.11
             - stable-3.10