Bump baseline-browser-mapping from 2.9.3 to 2.9.4 in the packages group

Bumps the packages group with 1 update: [baseline-browser-mapping](https://github.com/web-platform-dx/baseline-browser-mapping).


Updates `baseline-browser-mapping` from 2.9.3 to 2.9.4
- [Release notes](https://github.com/web-platform-dx/baseline-browser-mapping/releases)
- [Commits](web-platform-dx/baseline-browser-mapping@v2.9.3...v2.9.4)

---
updated-dependencies:
- dependency-name: baseline-browser-mapping
  dependency-version: 2.9.4
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: packages
...

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Author: dependabot[bot]