chore(deps): bump brace-expansion in /tests (#767)

Bumps  and [brace-expansion](https://github.com/juliangruber/brace-expansion). These dependencies needed to be updated together.

Updates `brace-expansion` from 1.1.18 to 1.1.21
- [Release notes](https://github.com/juliangruber/brace-expansion/releases)
- [Commits](juliangruber/brace-expansion@v1.1.18...v1.1.21)

Updates `brace-expansion` from 2.1.4 to 2.1.7
- [Release notes](https://github.com/juliangruber/brace-expansion/releases)
- [Commits](juliangruber/brace-expansion@v1.1.18...v1.1.21)

---
updated-dependencies:
- dependency-name: brace-expansion
  dependency-version: 1.1.21
  dependency-type: indirect
- dependency-name: brace-expansion
  dependency-version: 2.1.7
  dependency-type: indirect
...

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Author: dependabot[bot]