chore(deps): bump webpack-dev-server from 4.15.2 to 5.2.1

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 4.15.2 to 5.2.1.
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md)
- [Commits](webpack/webpack-dev-server@v4.15.2...v5.2.1)

---
updated-dependencies:
- dependency-name: webpack-dev-server
  dependency-version: 5.2.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

packages/ringcentral-integration/package.json

@@ -112,7 +112,7 @@
     "util": "^0.12.4",
     "vm-browserify": "1.1.2",
     "webpack": "^5.94.0",
-    "webpack-dev-server": "^4.15.1",
+    "webpack-dev-server": "^5.2.1",
     "yargs": "^17.1.1"
   },
   "peerDependencies": {

packages/ringcentral-widgets-demo/package.json

@@ -48,7 +48,7 @@
     "ringcentral-client": "^1.0.0-beta.2",
     "styled-components": "^5.3.3",
     "webpack": "^5.94.0",
-    "webpack-dev-server": "^4.15.1",
+    "webpack-dev-server": "^5.2.1",
     "webpack-merge": "^5.10.0",
     "yargs": "^17.1.1"
   },