Bump chiseltest from 829edbe to 595f6c4 (#428)

Bumps [chiseltest](https://github.com/ucb-bar/chiseltest) from `829edbe` to `595f6c4`.
- [Release notes](https://github.com/ucb-bar/chiseltest/releases)
- [Commits](ucb-bar/chiseltest@829edbe...595f6c4)

---
updated-dependencies:
- dependency-name: chiseltest
  dependency-type: direct:production
...

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