Bump toml from 0.5.8 to 0.5.9

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](https://github.com/alexcrichton/toml-rs/compare/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>

Cargo.lock

@@ -1069,9 +1069,9 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.5.8"
+version = "0.5.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a31142970826733df8241ef35dc040ef98c679ab14d7c3e54d827099b3acecaa"
+checksum = "8d82e1a7758622a465f8cee077614c73484dac5b836c02ff6a40d5d1010324d7"
 dependencies = [
  "serde",
 ]