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

@@ -110,7 +110,7 @@
 		"vue-template-compiler": "^2.6.12",
 		"webpack": "^4.46.0",
 		"webpack-cli": "^3.3.12",
-		"webpack-dev-server": "^3.11.1",
+		"webpack-dev-server": "^3.11.2",
 		"webpack-merge": "^5.7.3"
 	},
 	"jest": {