Update dependency css-loader to v3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
css-loader	dependencies	major	^2.1.1 -> ^3.0.0

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Release Notes

webpack-contrib/css-loader

### [`v3.0.0`](https://togithub.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md#​300httpsgithubcomwebpack-contribcss-loadercomparev211v300-2019-06-11) [Compare Source](https://togithub.com/webpack-contrib/css-loader/compare/v2.1.1...v3.0.0) ##### Bug Fixes - avoid the "from" argument must be of type string error ([#​908](https://togithub.com/webpack-contrib/css-loader/issues/908)) ([e5dfd23](https://togithub.com/webpack-contrib/css-loader/commit/e5dfd23)) - invert `Function` behavior for `url` and `import` options ([#​939](https://togithub.com/webpack-contrib/css-loader/issues/939)) ([e9eb5ad](https://togithub.com/webpack-contrib/css-loader/commit/e9eb5ad)) - properly export locals with escaped characters ([#​917](https://togithub.com/webpack-contrib/css-loader/issues/917)) ([a0efcda](https://togithub.com/webpack-contrib/css-loader/commit/a0efcda)) - property handle non css characters in localIdentName ([#​920](https://togithub.com/webpack-contrib/css-loader/issues/920)) ([d3a0a3c](https://togithub.com/webpack-contrib/css-loader/commit/d3a0a3c)) ##### Features - modules options now accepts object config ([#​937](https://togithub.com/webpack-contrib/css-loader/issues/937)) ([1d7a464](https://togithub.com/webpack-contrib/css-loader/commit/1d7a464)) - support `@value` at-rule in selectors ([#​941](https://togithub.com/webpack-contrib/css-loader/issues/941)) ([05a42e2](https://togithub.com/webpack-contrib/css-loader/commit/05a42e2)) ##### BREAKING CHANGES - minimum required nodejs version is 8.9.0 - `@value` at rules now support in `selector`, recommends checking all `@values` at-rule usage (hint: you can add prefix to all `@value` at-rules, for example `@value v-foo: black;` or `@value m-foo: screen and (max-width: 12450px)`, and then do upgrade) - invert `{Function}` behavior for `url` and `import` options (need return `true` when you want handle `url`/`@import` and return `false` if not) - `exportLocalsStyle` option was remove in favor `localsConvention` option, also it is accept only `{String}` value (use `camelCase` value if you previously value was `true` and `asIs` if you previously value was `false`) - `exportOnlyLocals` option was remove in favor `onlyLocals` option - `modules` option now can be `{Object}` and allow to setup `CSS Modules` options: - `localIdentName` option was removed in favor `modules.localIdentName` option - `context` option was remove in favor `modules.context` option - `hashPrefix` option was removed in favor `modules.hashPrefix` option - `getLocalIdent` option was removed in favor `modules.getLocalIdent` option - `localIdentRegExp` option was removed in favor `modules.localIdentRegExp` option

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