chore(deps): update dependency eslint-plugin-import to v2.15.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
eslint-plugin-import	devDependencies	minor	2.14.0 -> 2.15.0	source

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Release Notes

benmosher/eslint-plugin-import

### [`v2.15.0`](https://togithub.com/benmosher/eslint-plugin-import/blob/master/CHANGELOG.md#​2150---2019-01-22) [Compare Source](https://togithub.com/benmosher/eslint-plugin-import/compare/v2.14.0...v2.15.0) ##### Added - new rule: [`no-named-export`] \([#​1157], thanks [@​fsmaia]) ##### Fixed - [`no-extraneous-dependencies`]: `packageDir` option with array value was clobbering package deps instead of merging them ([#​1175]/[#​1176], thanks [@​aravindet] & [@​pzhine]) - [`dynamic-import-chunkname`]: Add proper webpack comment parsing ([#​1163], thanks [@​st-sloth]) - [`named`]: fix destructuring assignment ([#​1232], thanks [@​ljqx])

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