chore(deps): update dependency linkinator to v2

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
linkinator	devDependencies	major	^1.5.0 -> ^2.0.0

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Release Notes

JustinBeckwith/linkinator

### [`v2.0.1`](https://togithub.com/JustinBeckwith/linkinator/releases/v2.0.1) [Compare Source](https://togithub.com/JustinBeckwith/linkinator/compare/v2.0.0...v2.0.1) ##### Bug Fixes - ignore prefetch and connect for link ([#​145](https://togithub.com/JustinBeckwith/linkinator/issues/145)) ([154eb2b](https://togithub.com/JustinBeckwith/linkinator/commit/154eb2b6c3ac8dab8f55e7d05566ad7aff1e5d9a)) ### [`v2.0.0`](https://togithub.com/JustinBeckwith/linkinator/releases/v2.0.0) [Compare Source](https://togithub.com/JustinBeckwith/linkinator/compare/v1.8.2...v2.0.0) - build!: drop support for node.js 8.x ([#​142](https://togithub.com/JustinBeckwith/linkinator/issues/142)) ([85642bd](https://togithub.com/JustinBeckwith/linkinator/commit/85642bdb1ccead89dc6d25f7891054f28e6ce609)), closes [#​142](https://togithub.com/JustinBeckwith/linkinator/issues/142) ##### BREAKING CHANGES - This module now requires Node.js 10.x or greater. Please upgrade to a LTS release of node.js.

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[codecov[bot]]

Codecov Report

Merging #157 into master will not change coverage. The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #157   +/-   ##
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  Coverage     100%   100%           
=====================================
  Files           1      1           
  Lines          66     66           
  Branches       14     14           
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  Hits           66     66

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