chore(deps): update dependency eslint-plugin-import to v2.18.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
eslint-plugin-import	devDependencies	minor	2.17.3 -> 2.18.0

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Release Notes

benmosher/eslint-plugin-import

### [`v2.18.0`](https://togithub.com/benmosher/eslint-plugin-import/blob/master/CHANGELOG.md#​2180---2019-06-24) [Compare Source](https://togithub.com/benmosher/eslint-plugin-import/compare/v2.17.3...v2.18.0) ##### Added - Support eslint v6 ([#​1393], thanks [@​sheepsteak]) - [`order`]: Adds support for correctly sorting unknown types into a single group ([#​1375], thanks [@​swernerx]) - [`order`]: add fixer for destructuring commonjs import ([#​1372], thanks [@​golopot]) - typescript config: add TS def extensions + defer to TS over JS ([#​1366], thanks [@​benmosher]) ##### Fixes - [`no-unused-modules`]: handle ClassDeclaration ([#​1371], thanks [@​golopot]) ##### Docs - [`no-cycle`]: split code examples so file separation is obvious ([#​1370], thanks [@​alex-page]) - [`no-named-as-default-member`]: update broken link ([#​1389], thanks [@​fooloomanzoo])

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