build(deps-dev): bump undici in /flipt-client-browser (#634)

Bumps [undici](https://github.com/nodejs/undici) from 7.2.0 to 7.2.1.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v7.2.0...v7.2.1)

---
updated-dependencies:
- dependency-name: undici
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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