Update dependency @nuxtjs/eslint-config to v3.1.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@nuxtjs/eslint-config	3.0.0 -> 3.1.0

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Release Notes

nuxt/eslint-config

### [`v3.1.0`](https://togithub.com/nuxt/eslint-config/releases/@​nuxtjs/eslint-config@3.1.0) [Compare Source](https://togithub.com/nuxt/eslint-config/compare/@nuxtjs/eslint-config@3.0.0...@nuxtjs/eslint-config@3.1.0) #### Features - Update eslint-plugin-unicorn to v21 ([#​108](https://togithub.com/nuxt/eslint-config/issues/108)) - Update eslint-plugin-import to v2.22.0 ([#​97](https://togithub.com/nuxt/eslint-config/issues/97) )

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