chore(deps): update rust crate syn to v2.0.67 (#186)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [syn](https://togithub.com/dtolnay/syn) | workspace.dependencies | patch | `2.0.66` -> `2.0.67` |

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### Release Notes

<details>
<summary>dtolnay/syn (syn)</summary>

### [`v2.0.67`](https://togithub.com/dtolnay/syn/releases/tag/2.0.67)

[Compare Source](https://togithub.com/dtolnay/syn/compare/2.0.66...2.0.67)

-   Produce more accurate error message locations for errors located at the end of a nested group ([#&#8203;1679](https://togithub.com/dtolnay/syn/issues/1679), [#&#8203;1680](https://togithub.com/dtolnay/syn/issues/1680))
-   Support peeking `LitCStr` in ParseStream::peek ([#&#8203;1682](https://togithub.com/dtolnay/syn/issues/1682))

</details>

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