chore(deps-dev): bump mini-css-extract-plugin (#4872)

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.4.6 to 2.6.0.
- [Release notes](https://github.com/webpack-contrib/mini-css-extract-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/mini-css-extract-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/mini-css-extract-plugin/compare/v2.4.6...v2.6.0)

---
updated-dependencies:
- dependency-name: mini-css-extract-plugin
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/packages/excalidraw/package.json

@@ -57,7 +57,7 @@
     "babel-plugin-transform-class-properties": "6.24.1",
     "cross-env": "7.0.3",
     "css-loader": "6.7.1",
-    "mini-css-extract-plugin": "2.4.6",
+    "mini-css-extract-plugin": "2.6.0",
     "postcss-loader": "6.2.1",
     "sass-loader": "12.4.0",
     "terser-webpack-plugin": "5.3.1",

src/packages/excalidraw/yarn.lock

@@ -3083,10 +3083,10 @@ mimic-fn@^2.1.0:
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
   integrity sha512-OqbOk5oEQeAZ8WXWydlu9HJjz9WVdEIvamMCcXmuqUYjTknH/sqsWvhQ3vgwKFRR1HpjvNBKQ37nbJgYzGqGcg==
 
-mini-css-extract-plugin@2.4.6:
-  version "2.4.6"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.4.6.tgz#0f925aaa02dd26513bac40802062a87ebe32e7cc"
-  integrity sha512-khHpc29bdsE9EQiGSLqQieLyMbGca+bkC42/BBL1gXC8yAS0nHpOTUCBYUK6En1FuRdfE9wKXhGtsab8vmsugg==
+mini-css-extract-plugin@2.6.0:
+  version "2.6.0"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.6.0.tgz#578aebc7fc14d32c0ad304c2c34f08af44673f5e"
+  integrity sha512-ndG8nxCEnAemsg4FSgS+yNyHKgkTB4nPKqCOgh65j3/30qqC5RaSQQXMm++Y6sb6E1zRSxPkztj9fqxhS1Eo6w==
   dependencies:
     schema-utils "^4.0.0"