Update eslint-config-airbnb to the latest version 🚀

[greenkeeper[bot]]

The devDependency eslint-config-airbnb was updated from 17.1.1 to 18.0.0.

This version is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

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Publisher: ljharb License: MIT

Find out more about this release.

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Your Greenkeeper bot :palm_tree:

[greenkeeper[bot]]

• The devDependency eslint-config-airbnb was updated from 17.1.1 to 18.0.1.

Update to this version instead 🚀