message: build: use per-repo npm publish token
diff: @@ -47,6 +47,15 @@ before_action {
  }
  }
  +before_action {
  + fetch_keystore {
  + keystore_resource {
  + keystore_config_id: 73713
  + keyname: "google-cloud-pubsub-npm-token"
  + }
  + }
  +}
  +
  # Download trampoline resources.
  gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
  