Bump brotli from 1.1.0 to 1.2.0 (#6288)

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](https://github.com/google/brotli/compare/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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -4,7 +4,7 @@ atomicwrites-homeassistant==1.4.1
 attrs==25.4.0
 awesomeversion==25.8.0
 blockbuster==1.5.25
-brotli==1.1.0
+brotli==1.2.0
 ciso8601==2.3.3
 colorlog==6.10.1
 cpe==1.3.1