message: chore: update travis config
diff: language: node_js
  node_js:
  -- '8'
  -cache: yarn
  +- '10'
  +addons:
  + apt:
  + packages:
  + # Cypress: Ubuntu 16+ does not install this dependency by default, so we need to install it ourselves
  + - libgconf-2-4
  +cache:
  + yarn: true
  + directories:
  + # we also need to cache folder with Cypress binary
  + - ~/.cache
  env:
  global:
  - GH_REF: github.com/Redocly/redoc.git
  