Bump toml from 0.8.20 to 0.8.21 (#35)

Bumps [toml](https://github.com/toml-rs/toml) from 0.8.20 to 0.8.21.
- [Commits](toml-rs/toml@toml-v0.8.20...toml-v0.8.21)

---
updated-dependencies:
- dependency-name: toml
  dependency-version: 0.8.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Cargo.lock

@@ -48,7 +48,7 @@ examples_common = { path = "../examples_common" }
 criterion = { version = "0.5.1", features = ["html_reports"] }
 crossbeam-queue = "0.3"
 blake3 = "1.8"
-toml = "0.8.19"
+toml = "0.8.21"
 metrics-util = "0.19.1"
 metrics-exporter-prometheus = "0.17"