Bump toml from 0.8.23 to 0.9.4 in /autorust (#640)

Bumps [toml](https://github.com/toml-rs/toml) from 0.8.23 to 0.9.4.
- [Commits](toml-rs/toml@toml-v0.8.23...toml-v0.9.4)

---
updated-dependencies:
- dependency-name: toml
  dependency-version: 0.9.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

autorust/Cargo.lock

@@ -24,7 +24,7 @@ once_cell = "1"
 syn = { version = "2", features = ["parsing"] }
 camino = "1"
 askama = "0.14"
-toml = "0.8"
+toml = "0.9"
 qstring = "0.7"
 cargo_toml = "0.22"