Upgrade eslint-config-yoast to the latest version

[moorscode]

As we are currently behind a couple of versions, the eslint configuration is not checking for all the things we want to be checking on.

Todo:

• Upgrade eslint-config-yoast
• Autofix the problems that can be autofixed
  • Temporarily add a line with:fix: true to https://github.com/Yoast/yoast-components/blob/develop/grunt/config/eslint.js#L4

Bump the number of maxWarnings to the number of warnings still remain (currently: 357)

These errors need to be fixed, separate issues will be created for these.