Update Rust crate parking to v2.2.1 (zed-industries#18664)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [parking](https://github.com/smol-rs/parking) | dependencies
| patch | `2.2.0` -> `2.2.1` |

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### Release Notes

<details>
<summary>smol-rs/parking (parking)</summary>

###
[`v2.2.1`](https://github.com/smol-rs/parking/blob/HEAD/CHANGELOG.md#Version-221)

[Compare
Source](https://github.com/smol-rs/parking/compare/v2.2.0...v2.2.1)

- Specify the reason for using `parking` in the docs.
([#&zed-industries#8203;25](https://github.com/smol-rs/parking/issues/25))

</details>

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Release Notes:

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