build: use latest node on travis
Our Travis setup asks for the latest node version when running the linter. We're actually ending up with Node 8.9.1. Trying this instead...
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commit message follows commit guidelines
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Our Travis setup asks for the latest node version when running the linter. We're actually ending up with Node 8.9.1. Trying this instead...