build: bump which-builtin-type from 1.1.4 to 1.2.1 (#1173)

Bumps [which-builtin-type](https://github.com/inspect-js/which-builtin-type) from 1.1.4 to 1.2.1.
- [Changelog](https://github.com/inspect-js/which-builtin-type/blob/main/CHANGELOG.md)
- [Commits](inspect-js/which-builtin-type@v1.1.4...v1.2.1)

---
updated-dependencies:
- dependency-name: which-builtin-type
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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