Bump webpack-dev-server from 3.9.0 to 3.10.0 (#4681)

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 3.9.0 to 3.10.0.
- [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/v3.9.0...v3.10.0)
Signed-off-by: Ndependabot-preview[bot] <support@dependabot.com>

package.json

@@ -188,7 +188,7 @@
     "tslint": "5.20.1",
     "typescript": "3.4.5",
     "wait-on": "3.3.0",
-    "webpack-dev-server": "3.9.0"
+    "webpack-dev-server": "3.10.0"
   },
   "engines": {
     "node": ">=10.9.0",