chore(deps-dev): bump baseline-browser-mapping in /ui

Bumps [baseline-browser-mapping](https://github.com/web-platform-dx/baseline-browser-mapping) from 2.10.43 to 2.11.21.
- [Release notes](https://github.com/web-platform-dx/baseline-browser-mapping/releases)
- [Commits](web-platform-dx/baseline-browser-mapping@v2.10.43...v2.11.21)

---
updated-dependencies:
- dependency-name: baseline-browser-mapping
  dependency-version: 2.11.21
  dependency-type: indirect
...

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Author: dependabot[bot]