Bump mini-css-extract-plugin from 2.7.5 to 2.7.6

Bumps [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) from 2.7.5 to 2.7.6.
- [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/v2.7.5...v2.7.6)

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

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

package.json

@@ -31,7 +31,7 @@
     "jquery-ujs": "^1.2.3",
     "jstree": "^3.3.15",
     "keycharm": "^0.4.0",
-    "mini-css-extract-plugin": "^2.7.5",
+    "mini-css-extract-plugin": "^2.7.6",
     "moment": "^2.29.4",
     "opensans-webkit": "^1.1.0",
     "pnp-webpack-plugin": "^1.7.0",

yarn.lock

@@ -3254,10 +3254,10 @@ 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@^2.7.5:
-  version "2.7.5"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.7.5.tgz#afbb344977659ec0f1f6e050c7aea456b121cfc5"
-  integrity sha512-9HaR++0mlgom81s95vvNjxkg52n2b5s//3ZTI1EtzFb98awsLSivs2LMsVqnQ3ay0PVhqWcGNyDaTE961FOcjQ==
+mini-css-extract-plugin@^2.7.6:
+  version "2.7.6"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-2.7.6.tgz#282a3d38863fddcd2e0c220aaed5b90bc156564d"
+  integrity sha512-Qk7HcgaPkGG6eD77mLvZS1nmxlao3j+9PkrT9Uc7HAE1id3F41+DdBRYRYkbyfNRGzm8/YWtzhw7nVPmwhqTQw==
   dependencies:
     schema-utils "^4.0.0"