Build: Bump daft from 0.6.7 to 0.6.8

Bumps [daft](https://github.com/Eventual-Inc/Daft) from 0.6.7 to 0.6.8.
- [Release notes](https://github.com/Eventual-Inc/Daft/releases)
- [Commits](Eventual-Inc/Daft@v0.6.7...v0.6.8)

---
updated-dependencies:
- dependency-name: daft
  dependency-version: 0.6.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]