build(deps): bump webpack-dev-server and @angular-devkit/build-angular

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) to 5.2.6 and updates ancestor dependency [@angular-devkit/build-angular](https://github.com/angular/angular-cli). These dependencies need to be updated together.


Updates `webpack-dev-server` from 5.2.1 to 5.2.6
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/v5.2.6/CHANGELOG.md)
- [Commits](webpack/webpack-dev-server@v5.2.1...v5.2.6)

Updates `@angular-devkit/build-angular` from 20.0.1 to 22.1.5
- [Release notes](https://github.com/angular/angular-cli/releases)
- [Changelog](https://github.com/angular/angular-cli/blob/main/CHANGELOG.md)
- [Commits](angular/angular-cli@20.0.1...v22.1.5)

---
updated-dependencies:
- dependency-name: "@angular-devkit/build-angular"
  dependency-version: 22.1.5
  dependency-type: direct:development
- dependency-name: webpack-dev-server
  dependency-version: 5.2.6
  dependency-type: indirect
...

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Author: dependabot[bot]