build(deps): Bump synckit from 0.8.6 to 0.8.8

Bumps [synckit](https://github.com/un-ts/synckit) from 0.8.6 to 0.8.8.
- [Release notes](https://github.com/un-ts/synckit/releases)
- [Changelog](https://github.com/un-ts/synckit/blob/main/CHANGELOG.md)
- [Commits](un-ts/synckit@v0.8.6...v0.8.8)

---
updated-dependencies:
- dependency-name: synckit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>