Bump toml from 0.5.8 to 0.5.9 (#1815)

Bumps [toml](https://github.com/alexcrichton/toml-rs) from 0.5.8 to 0.5.9.
- [Release notes](https://github.com/alexcrichton/toml-rs/releases)
- [Commits](toml-rs/toml-rs@0.5.8...0.5.9)

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

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

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