Bump baseline-browser-mapping from 2.8.12 to 2.8.13 in the npm group (#1996)

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


Updates `baseline-browser-mapping` from 2.8.12 to 2.8.13
- [Release notes](https://github.com/web-platform-dx/baseline-browser-mapping/releases)
- [Commits](web-platform-dx/baseline-browser-mapping@v2.8.12...v2.8.13)

---
updated-dependencies:
- dependency-name: baseline-browser-mapping
  dependency-version: 2.8.13
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: npm
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]