Build events-aws-kinesis plugin on stable-3.13

Change-Id: Ic638503ed02fa5a8766c6ca3e2147bc011096a12

Author: barbasa

jenkins/gerrit-bazel-plugin-events-aws-kinesis.yaml

@@ -12,5 +12,6 @@
       - 'plugin-{name}-gh-bazel-{branch}':
           branch:
             - master
+            - stable-3.13
       - 'plugin-{name}-verifier'
       - 'plugin-{name}-verifier-gh'