chore(deps): update dependency uglifyjs-webpack-plugin to v2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
uglifyjs-webpack-plugin	1.3.0 -> 2.2.0

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Release Notes

webpack-contrib/uglifyjs-webpack-plugin

### [`v2.2.0`](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/blob/HEAD/CHANGELOG.md#​220-httpsgithubcomwebpack-contribuglifyjs-webpack-plugincomparev213v220-2019-07-31) [Compare Source](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v2.1.3...v2.2.0) ##### Features - generate higher quality SourceMaps ([#​408](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/408)) ([b1df135](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/b1df135)) ##### [2.1.3](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v2.1.2...v2.1.3) (2019-05-15) ##### Bug Fixes - disable parallel on WSL ([#​403](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/403)) ([7619736](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/7619736)) - fallback for cache directory ([#​401](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/401)) ([d117827](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/d117827)) ### [`v2.1.3`](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/blob/HEAD/CHANGELOG.md#​213-httpsgithubcomwebpack-contribuglifyjs-webpack-plugincomparev212v213-2019-05-15) [Compare Source](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v2.1.2...v2.1.3) ### [`v2.1.2`](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/blob/HEAD/CHANGELOG.md#​212-httpsgithubcomwebpack-contribuglifyjs-webpack-plugincomparev211v212-2019-02-25) [Compare Source](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v2.1.1...v2.1.2) ##### Bug Fixes - invalidate cache after changing node version ([#​396](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/396)) ([380bb54](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/380bb54)) ### [`v2.1.1`](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/blob/HEAD/CHANGELOG.md#​211-httpsgithubcomwebpack-contribuglifyjs-webpack-plugincomparev210v211-2018-12-27) [Compare Source](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v2.1.0...v2.1.1) ##### Bug Fixes - don't crash when no extracted comments ([#​387](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/387)) ([68ad71c](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/68ad71c)) ### [`v2.1.0`](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/blob/HEAD/CHANGELOG.md#​210-httpsgithubcomwebpack-contribuglifyjs-webpack-plugincomparev201v210-2018-12-22) [Compare Source](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v2.0.1...v2.1.0) ##### Bug Fixes - `chunks` is a `Set` in webpack@5 ([#​365](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/365)) ([bf36e21](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/bf36e21)) - catch `worker-farm` errors ([#​380](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/380)) ([aa7a9fc](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/aa7a9fc)) - dedupe extracted comments ([#​383](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/383)) ([beaf1ad](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/beaf1ad)) - more consistent cache ([#​385](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/385)) ([f61439d](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/f61439d)) - regenerate `contenthash` when assets was minified ([#​386](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/386)) ([65a30da](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/65a30da)) ##### Features - `chunkFilter` option for filtering chunks ([#​382](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/382)) ([1e58c99](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/1e58c99)) #### [2.0.1](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v2.0.0...v2.0.1) (2018-09-18) ##### Bug Fixes - decrease minimum required `uglify-js` version ([#​357](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/357)) ([dc9d038](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/dc9d038)) ### [`v2.0.1`](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/blob/HEAD/CHANGELOG.md#​201-httpsgithubcomwebpack-contribuglifyjs-webpack-plugincomparev200v201-2018-09-18) [Compare Source](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v2.0.0...v2.0.1) ##### Bug Fixes - decrease minimum required `uglify-js` version ([#​357](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/issues/357)) ([dc9d038](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/commit/dc9d038)) ### [`v2.0.0`](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/blob/HEAD/CHANGELOG.md#​200-httpsgithubcomwebpack-contribuglifyjs-webpack-plugincomparev130v200-2018-09-14) [Compare Source](https://togithub.com/webpack-contrib/uglifyjs-webpack-plugin/compare/v1.3.0...v2.0.0) ##### Bug Fixes - default extract comment condition is case insensitivity ##### Features - full coverage schema options validation - enable inline optimization by default ##### BREAKING CHANGES - Switch back to [uglify-js](https://togithub.com/mishoo/UglifyJS2) (`uglify-es` is abandoned, if you need uglify ES6 code please use [terser-webpack-plugin](https://togithub.com/webpack-contrib/terser-webpack-plugin)). - Changed function signature for `warningsFilter` option (now first argument is `warning`, second is `source`). - Enforces `peerDependencies` of `"webpack": "^4.3.0`. - Enforces `engines` of `"node": ">= 6.9.0 <7.0.0 || >= 8.9.0`

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