Update Travis

Author: wooorm

.travis.yml

@@ -1,15 +1,15 @@
 language: node_js
 node_js:
-- lts/boron
-- node
+  - lts/dubnium
+  - node
 after_script: bash <(curl -s https://codecov.io/bash)
 deploy:
   provider: releases
   skip_cleanup: true
   api_key:
     secure: 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
   file:
-    - "hast-util-is-element.js"
-    - "hast-util-is-element.min.js"
+    - 'hast-util-is-element.js'
+    - 'hast-util-is-element.min.js'
   on:
     tags: true