Bump webpack-dev-server from 3.11.1 to 3.11.2

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 3.11.1 to 3.11.2.
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/v3.11.2/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-dev-server/compare/v3.11.1...v3.11.2)

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

package.json

@@ -21,7 +21,7 @@
     "webpack-merge": "^5.7.3"
   },
   "devDependencies": {
-    "webpack-dev-server": "^3.11.0"
+    "webpack-dev-server": "^3.11.2"
   },
   "scripts": {
     "webpack": "./bin/webpack",