chore(deps): update dependency mini-css-extract-plugin to ^0.12.0 (#76)

[![WhiteSource Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

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/0.11.0/0.12.0) | [![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/0.11.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/npm/mini-css-extract-plugin/0.12.0/confidence-slim/0.11.0)](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)

### [`v0.11.3`](https://togithub.com/webpack-contrib/mini-css-extract-plugin/blob/master/CHANGELOG.md#&#8203;0113-httpsgithubcomwebpack-contribmini-css-extract-plugincomparev0112v0113-2020-10-02)

[Compare Source](https://togithub.com/webpack-contrib/mini-css-extract-plugin/compare/v0.11.2...v0.11.3)

### [`v0.11.2`](https://togithub.com/webpack-contrib/mini-css-extract-plugin/blob/master/CHANGELOG.md#&#8203;0112-httpsgithubcomwebpack-contribmini-css-extract-plugincomparev0111v0112-2020-09-12)

[Compare Source](https://togithub.com/webpack-contrib/mini-css-extract-plugin/compare/v0.11.1...v0.11.2)

### [`v0.11.1`](https://togithub.com/webpack-contrib/mini-css-extract-plugin/blob/master/CHANGELOG.md#&#8203;0111-httpsgithubcomwebpack-contribmini-css-extract-plugincomparev0110v0111-2020-09-08)

[Compare Source](https://togithub.com/webpack-contrib/mini-css-extract-plugin/compare/v0.11.0...v0.11.1)

</details>

---

### Configuration

📅 **Schedule**: At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox.

---

This PR has been generated by [WhiteSource Renovate](https://renovate.whitesourcesoftware.com). View repository job log [here](https://app.renovatebot.com/dashboard#github/carbon-design-system/carbon-for-ibm-dotcom-web-components-test).

Author: renovate[bot]

package.json

@@ -51,7 +51,7 @@
     "http-server": "^0.12.3",
     "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": "^4.9.4",
     "postcss-loader": "^3.0.0",
     "prettier": "^2.1.2",

yarn.lock

@@ -8225,10 +8225,10 @@ 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 "0.11.0"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.11.0.tgz#3918953075109d4ca204bf1e8a393a78d3cc821f"
-  integrity sha512-dVWGuWJlQw2lZxsxBI3hOsoxg1k3DruLR0foHQLSkQMfk+qLJbv9dUk8fjmjWQKN9ef2n54ehA2FjClAsQhrWQ==
+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"