Bump webpack-dev-server from 5.0.4 to 5.2.2 in /workspaces/grafana (#4220)

* Bump webpack-dev-server from 5.0.4 to 5.2.2 in /workspaces/grafana

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 5.0.4 to 5.2.2.
- [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@v5.0.4...v5.2.2)

---
updated-dependencies:
- dependency-name: webpack-dev-server
  dependency-version: 5.2.2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

* run yarn dedupe

Signed-off-by: Kashish Mittal <[email protected]>

---------

Signed-off-by: dependabot[bot] <[email protected]>
Signed-off-by: Kashish Mittal <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Kashish Mittal <[email protected]>

Author: dependabot[bot]