Bump braces, vinyl-fs, chokidar and webpack-dev-server

Bumps [braces](https://github.com/micromatch/braces) to 3.0.2 and updates ancestor dependencies [braces](https://github.com/micromatch/braces), [vinyl-fs](https://github.com/gulpjs/vinyl-fs), [chokidar](https://github.com/paulmillr/chokidar) and [webpack-dev-server](https://github.com/webpack/webpack-dev-server). These dependencies need to be updated together.


Updates `braces` from 1.8.5 to 3.0.2
- [Release notes](https://github.com/micromatch/braces/releases)
- [Changelog](https://github.com/micromatch/braces/blob/master/CHANGELOG.md)
- [Commits](micromatch/braces@1.8.5...3.0.2)

Updates `vinyl-fs` from 2.4.4 to 3.0.3
- [Release notes](https://github.com/gulpjs/vinyl-fs/releases)
- [Commits](gulpjs/vinyl-fs@v2.4.4...v3.0.3)

Updates `chokidar` from 1.7.0 to 2.1.8
- [Release notes](https://github.com/paulmillr/chokidar/releases)
- [Commits](https://github.com/paulmillr/chokidar/commits)

Updates `webpack-dev-server` from 1.16.5 to 4.13.3
- [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@v1.16.5...v4.13.3)

---
updated-dependencies:
- dependency-name: braces
  dependency-type: indirect
- dependency-name: vinyl-fs
  dependency-type: indirect
- dependency-name: chokidar
  dependency-type: indirect
- dependency-name: webpack-dev-server
  dependency-type: direct:development
...

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