Bump braces and vinyl-fs in /packages/build

Removes [braces](https://github.com/micromatch/braces). It's no longer used after updating ancestor dependency [vinyl-fs](https://github.com/gulpjs/vinyl-fs). These dependencies need to be updated together.


Removes `braces`

Updates `vinyl-fs` from 2.4.4 to 4.0.0
- [Release notes](https://github.com/gulpjs/vinyl-fs/releases)
- [Changelog](https://github.com/gulpjs/vinyl-fs/blob/master/CHANGELOG.md)
- [Commits](gulpjs/vinyl-fs@v2.4.4...v4.0.0)

---
updated-dependencies:
- dependency-name: braces
  dependency-type: indirect
- dependency-name: vinyl-fs
  dependency-type: direct:production
...

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