chore(deps): update dependency mini-css-extract-plugin to ^0.12.0 (#45)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [mini-css-extract-plugin](https://togithub.com/webpack-contrib/mini-css-extract-plugin) | [`^0.11.0` -> `^0.12.0`](https://renovatebot.com/diffs/npm/mini-css-extract-plugin/0.11.3/0.12.0) | [![age](https://badges.renovateapi.com/packages/npm/mini-css-extract-plugin/0.12.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/npm/mini-css-extract-plugin/0.12.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/npm/mini-css-extract-plugin/0.12.0/compatibility-slim/0.11.3)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/npm/mini-css-extract-plugin/0.12.0/confidence-slim/0.11.3)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>webpack-contrib/mini-css-extract-plugin</summary>

### [`v0.12.0`](https://togithub.com/webpack-contrib/mini-css-extract-plugin/blob/master/CHANGELOG.md#&#8203;0120-httpsgithubcomwebpack-contribmini-css-extract-plugincomparev0113v0120-2020-10-07)

[Compare Source](https://togithub.com/webpack-contrib/mini-css-extract-plugin/compare/v0.11.3...v0.12.0)

</details>

---

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package.json

@@ -42,7 +42,7 @@
     "html-webpack-plugin": "^4.5.1",
     "husky": "^4.3.0",
     "lint-staged": "^10.4.0",
-    "mini-css-extract-plugin": "^0.11.0",
+    "mini-css-extract-plugin": "^0.12.0",
     "node-sass": "^6.0.1",
     "postcss": "^8.3.6",
     "postcss-loader": "4.2.0",

yarn.lock

@@ -6961,10 +6961,10 @@ min-indent@^1.0.0:
   resolved "https://registry.yarnpkg.com/min-indent/-/min-indent-1.0.1.tgz#a63f681673b30571fbe8bc25686ae746eefa9869"
   integrity sha512-I9jwMn07Sy/IwOj3zVkVik2JTvgpaykDZEigL6Rx6N9LbMywwUSMtxET+7lVoDLLd3O3IXwJwvuuns8UB/HeAg==
 
-mini-css-extract-plugin@^0.11.0:
-  version "0.11.3"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.11.3.tgz#15b0910a7f32e62ffde4a7430cfefbd700724ea6"
-  integrity sha512-n9BA8LonkOkW1/zn+IbLPQmovsL0wMb9yx75fMJQZf2X1Zoec9yTZtyMePcyu19wPkmFbzZZA6fLTotpFhQsOA==
+mini-css-extract-plugin@^0.12.0:
+  version "0.12.0"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.12.0.tgz#ddeb74fd6304ca9f99c1db74acc7d5b507705454"
+  integrity sha512-z6PQCe9rd1XUwZ8gMaEVwwRyZlrYy8Ba1gRjFP5HcV51HkXX+XlwZ+a1iAYTjSYwgNBXoNR7mhx79mDpOn5fdw==
   dependencies:
     loader-utils "^1.1.0"
     normalize-url "1.9.1"