Bump webpack-dev-server from 4.12.0 to 4.13.1

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 4.12.0 to 4.13.1.
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-dev-server/compare/v4.12.0...v4.13.1)

---
updated-dependencies:
- dependency-name: webpack-dev-server
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -55,7 +55,7 @@
     "xss": "^1.0.14"
   },
   "devDependencies": {
-    "webpack-dev-server": "^4.11.1"
+    "webpack-dev-server": "^4.13.1"
   },
   "babel": {
     "presets": [