Bump mini-css-extract-plugin from 1.3.8 to 1.3.9 (#15801)

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 1.3.8 to 1.3.9.
- [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/v1.3.8...v1.3.9)

Signed-off-by: dependabot[bot] <support@github.com>

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

package.json

@@ -111,7 +111,7 @@
     "lodash": "^4.17.21",
     "mark-loader": "^0.1.6",
     "marky": "^1.2.1",
-    "mini-css-extract-plugin": "^1.3.8",
+    "mini-css-extract-plugin": "^1.3.9",
     "mkdirp": "^1.0.4",
     "npmlog": "^4.1.2",
     "object-assign": "^4.1.1",

yarn.lock

@@ -7166,10 +7166,10 @@ 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@^1.3.8:
+mini-css-extract-plugin@^1.3.9:
-  version "1.3.8"
+  version "1.3.9"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-1.3.8.tgz#639047b78c2ee728704285aa468d2a5a8d91d566"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-1.3.9.tgz#47a32132b0fd97a119acd530e8421e8f6ab16d5e"
-  integrity sha512-u+2kVov/Gcs74iz+x3phEBWMAGw2djjnKfYez+Pl/b5dyXL7aM4Lp5QQtIq16CDwRHT/woUJki49gBNMhfm1eA==
+  integrity sha512-Ac4s+xhVbqlyhXS5J/Vh/QXUz3ycXlCqoCPpg0vdfhsIBH9eg/It/9L1r1XhSCH737M1lqcWnMuWL13zcygn5A==
   dependencies:
     loader-utils "^2.0.0"
     schema-utils "^3.0.0"