Build high-availability on stable-3.13

Change-Id: If0f389865ba6ea0b6a33dceb00b5370c656ea68d
diff --git a/jenkins/gerrit-bazel-plugin-high-availability.yaml b/jenkins/gerrit-bazel-plugin-high-availability.yaml
index cd17d1d..bf5986f 100644
--- a/jenkins/gerrit-bazel-plugin-high-availability.yaml
+++ b/jenkins/gerrit-bazel-plugin-high-availability.yaml
@@ -5,6 +5,7 @@
           extra-modules: 'global-refdb'
           branch:
             - master
+            - stable-3.13
             - stable-3.12
             - stable-3.11
             - stable-3.10