⬆️ micro: Update syn to v2.0.94 (#1195)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [syn](https://redirect.github.com/dtolnay/syn) | dependencies | patch
| `2.0.93` -> `2.0.94` |

---

### Release Notes

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

###
[`v2.0.94`](https://redirect.github.com/dtolnay/syn/releases/tag/2.0.94)

[Compare
Source](https://redirect.github.com/dtolnay/syn/compare/2.0.93...2.0.94)

- Expression precedence fixes
([#&#8203;1811](https://redirect.github.com/dtolnay/syn/issues/1811),
[#&#8203;1812](https://redirect.github.com/dtolnay/syn/issues/1812),
[#&#8203;1813](https://redirect.github.com/dtolnay/syn/issues/1813),
[#&#8203;1814](https://redirect.github.com/dtolnay/syn/issues/1814),
[#&#8203;1815](https://redirect.github.com/dtolnay/syn/issues/1815),
[#&#8203;1816](https://redirect.github.com/dtolnay/syn/issues/1816),
[#&#8203;1818](https://redirect.github.com/dtolnay/syn/issues/1818),
[#&#8203;1819](https://redirect.github.com/dtolnay/syn/issues/1819),
[#&#8203;1820](https://redirect.github.com/dtolnay/syn/issues/1820),
[#&#8203;1825](https://redirect.github.com/dtolnay/syn/issues/1825),
[#&#8203;1826](https://redirect.github.com/dtolnay/syn/issues/1826),
[#&#8203;1827](https://redirect.github.com/dtolnay/syn/issues/1827),
[#&#8203;1828](https://redirect.github.com/dtolnay/syn/issues/1828),
[#&#8203;1829](https://redirect.github.com/dtolnay/syn/issues/1829),
[#&#8203;1830](https://redirect.github.com/dtolnay/syn/issues/1830))

</details>

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