Bump mini-css-extract-plugin from 2.7.6 to 2.7.7

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.7.6 to 2.7.7.
- [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](webpack-contrib/mini-css-extract-plugin@v2.7.6...v2.7.7)

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

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

Author: dependabot[bot]

package-lock.json

@@ -60,7 +60,7 @@
     "file-loader": "^6.2.0",
     "html-webpack-plugin": "^5.6.0",
     "jest": "^26.6.3",
-    "mini-css-extract-plugin": "^2.7.6",
+    "mini-css-extract-plugin": "^2.7.7",
     "postcss": "^8.4.33",
     "postcss-loader": "^7.3.4",
     "style-loader": "^3.3.4",