Bump braces and karma

Bumps [braces](https://github.com/micromatch/braces) to 3.0.3 and updates ancestor dependency [karma](https://github.com/karma-runner/karma). These dependencies need to be updated together.


Updates `braces` from 1.8.5 to 3.0.3
- [Changelog](https://github.com/micromatch/braces/blob/master/CHANGELOG.md)
- [Commits](micromatch/braces@1.8.5...3.0.3)

Updates `karma` from 1.7.1 to 6.4.4
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](karma-runner/karma@1.7.1...v6.4.4)

---
updated-dependencies:
- dependency-name: braces
  dependency-type: indirect
- dependency-name: karma
  dependency-type: direct:development
...

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