build(deps): bump brotli from 1.1.0 to 1.2.0

Bumps [brotli](https://github.com/google/brotli) from 1.1.0 to 1.2.0.
- [Release notes](https://github.com/google/brotli/releases)
- [Changelog](https://github.com/google/brotli/blob/master/CHANGELOG.md)
- [Commits](google/brotli@go/cbrotli/v1.1.0...v1.2.0)

---
updated-dependencies:
- dependency-name: brotli
  dependency-version: 1.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]