Auto merge of #13088 - rust-lang:renovate/toml_edit-0.x, r=epage

chore(deps): update rust crate toml_edit to 0.21.0

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [toml_edit](https://togithub.com/toml-rs/toml) | workspace.dependencies | minor | `0.20.7` -> `0.21.0` |

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### Release Notes

<details>
<summary>toml-rs/toml (toml_edit)</summary>

### [`v0.21.0`](https://togithub.com/toml-rs/toml/compare/v0.20.7...v0.21.0)

[Compare Source](https://togithub.com/toml-rs/toml/compare/v0.20.7...v0.21.0)

</details>

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### Configuration

📅 **Schedule**: Branch creation - "before 5am on the first day of the month" (UTC), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

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Cargo.toml

@@ -95,7 +95,7 @@ tempfile = "3.8.1"
 thiserror = "1.0.50"
 time = { version = "0.3", features = ["parsing", "formatting", "serde"] }
 toml = "0.8.6"
-toml_edit = { version = "0.20.7", features = ["serde"] }
+toml_edit = { version = "0.21.0", features = ["serde"] }
 tracing = "0.1.40"
 tracing-subscriber = { version = "0.3.17", features = ["env-filter"] }
 unicase = "2.7.0"