Build aws-dynamodb-refdb plugin for Gerrit v3.11

Change-Id: Id0443d555b991fd3b7f8836b24e8f09b61005fd6
diff --git a/jenkins/gerrit-bazel-plugin-aws-dynamodb-refdb.yaml b/jenkins/gerrit-bazel-plugin-aws-dynamodb-refdb.yaml
index eb9f3d7..8c5f8c7 100644
--- a/jenkins/gerrit-bazel-plugin-aws-dynamodb-refdb.yaml
+++ b/jenkins/gerrit-bazel-plugin-aws-dynamodb-refdb.yaml
@@ -5,6 +5,7 @@
           extra-modules: 'global-refdb'
           branch:
             - master
+            - stable-3.11
             - stable-3.10
             - stable-3.9
             - stable-3.8