Bump mini-css-extract-plugin from 1.3.9 to 1.4.0 (#15976)

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 1.3.9 to 1.4.0.
- [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/v1.3.9...v1.4.0)

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

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

package.json

@@ -110,7 +110,7 @@
     "lodash": "^4.17.21",
     "mark-loader": "^0.1.6",
     "marky": "^1.2.1",
-    "mini-css-extract-plugin": "^1.3.9",
+    "mini-css-extract-plugin": "^1.4.0",
     "mkdirp": "^1.0.4",
     "npmlog": "^4.1.2",
     "object-assign": "^4.1.1",

yarn.lock

@@ -1005,6 +1005,15 @@
     lodash "^4.17.19"
     to-fast-properties "^2.0.0"
 
+"@babel/types@^7.12.5":
+  version "7.13.13"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.13.13.tgz#dcd8b815b38f537a3697ce84c8e3cc62197df96f"
+  integrity sha512-kt+EpC6qDfIaqlP+DIbIJOclYy/A1YXs9dAf/ljbi+39Bcbc073H6jKVpXEr/EoIh5anGn5xq/yRVzKl+uIc9w==
+  dependencies:
+    "@babel/helper-validator-identifier" "^7.12.11"
+    lodash "^4.17.19"
+    to-fast-properties "^2.0.0"
+
 "@bcoe/v8-coverage@^0.2.3":
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/@bcoe/v8-coverage/-/v8-coverage-0.2.3.tgz#75a2e8b51cb758a7553d6804a5932d7aace75c39"
@@ -7171,10 +7180,10 @@ 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@^1.3.9:
-  version "1.3.9"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-1.3.9.tgz#47a32132b0fd97a119acd530e8421e8f6ab16d5e"
-  integrity sha512-Ac4s+xhVbqlyhXS5J/Vh/QXUz3ycXlCqoCPpg0vdfhsIBH9eg/It/9L1r1XhSCH737M1lqcWnMuWL13zcygn5A==
+mini-css-extract-plugin@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-1.4.0.tgz#c8e571c4b6d63afa56c47260343adf623349c473"
+  integrity sha512-DyQr5DhXXARKZoc4kwvCvD95kh69dUupfuKOmBUqZ4kBTmRaRZcU32lYu3cLd6nEGXhQ1l7LzZ3F/CjItaY6VQ==
   dependencies:
     loader-utils "^2.0.0"
     schema-utils "^3.0.0"