chore(deps): Bump toml from 0.5.8 to 0.5.9 (#4332)

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>

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

Cargo.lock

@@ -6326,9 +6326,9 @@ 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",
 ]

iox_data_generator/Cargo.toml

@@ -22,7 +22,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.79"
 snafu = "0.7"
 tokio = { version = "1.17", features = ["macros", "parking_lot", "rt-multi-thread", "sync", "time"] }
-toml = "0.5.6"
+toml = "0.5.9"
 tracing = "0.1"
 tracing-subscriber = "0.3"
 uuid = { version = "0.8.1", default_features = false }