fix(deps): update rust crate syn to 2.0.106 (#90)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [syn](https://redirect.github.com/dtolnay/syn) |
workspace.dependencies | patch | `2.0.104` -> `2.0.106` |

---

### Release Notes

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

###
[`v2.0.106`](https://redirect.github.com/dtolnay/syn/releases/tag/2.0.106)

[Compare
Source](https://redirect.github.com/dtolnay/syn/compare/2.0.105...2.0.106)

- Replace `~const` syntax with `[const]` conditionally const syntax in
trait bounds
([#&#8203;1896](https://redirect.github.com/dtolnay/syn/issues/1896),
[rust-lang/rust#139858](https://redirect.github.com/rust-lang/rust/pull/139858))
- Support conditionally const impl Trait types
([#&#8203;1897](https://redirect.github.com/dtolnay/syn/issues/1897))
- Reject polarity modifier and lifetime binder used in the same trait
bound
([#&#8203;1899](https://redirect.github.com/dtolnay/syn/issues/1899),
[rust-lang/rust#127054](https://redirect.github.com/rust-lang/rust/pull/127054))
- Parse const trait bounds with bound lifetimes
([#&#8203;1902](https://redirect.github.com/dtolnay/syn/issues/1902))
- Parse bound lifetimes with lifetime bounds
([#&#8203;1903](https://redirect.github.com/dtolnay/syn/issues/1903))
- Allow type parameters and const parameters in trait bounds and generic
closures
([#&#8203;1904](https://redirect.github.com/dtolnay/syn/issues/1904),
[#&#8203;1907](https://redirect.github.com/dtolnay/syn/issues/1907),
[#&#8203;1908](https://redirect.github.com/dtolnay/syn/issues/1908),
[#&#8203;1909](https://redirect.github.com/dtolnay/syn/issues/1909))

###
[`v2.0.105`](https://redirect.github.com/dtolnay/syn/releases/tag/2.0.105)

[Compare
Source](https://redirect.github.com/dtolnay/syn/compare/2.0.104...2.0.105)

- Disallow "negative" inherent impls like `impl !T {}`
([#&#8203;1881](https://redirect.github.com/dtolnay/syn/issues/1881),
[rust-lang/rust#144386](https://redirect.github.com/rust-lang/rust/pull/144386))

</details>

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Author: jerusdp

CHANGELOG.md

@@ -41,6 +41,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - deps: update rust crate proc-macro2 to 1.0.101(pr [#87])
 - deps: update rust crate reqwest to 0.12.23(pr [#88])
 - deps: update rust crate serde_json to 1.0.143(pr [#89])
+- deps: update rust crate syn to 2.0.106(pr [#90])
 
 ## [0.1.2] - 2025-05-15
 
@@ -204,6 +205,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#87]: https://github.com/jerus-org/captval/pull/87
 [#88]: https://github.com/jerus-org/captval/pull/88
 [#89]: https://github.com/jerus-org/captval/pull/89
+[#90]: https://github.com/jerus-org/captval/pull/90
 [Unreleased]: https://github.com/jerus-org/captval/compare/v0.1.2...HEAD
 [0.1.2]: https://github.com/jerus-org/captval/compare/v0.1.0...v0.1.2
 [0.1.0]: https://github.com/jerus-org/captval/releases/tag/v0.1.0

Cargo.lock

@@ -21,7 +21,7 @@ reqwest = { version = "0.12.23", default-features = false, features = [
 serde = { version = "1.0.219", features = ["derive"] }
 serde_json = "1.0.143"
 serde_urlencoded = "0.7.1"
-syn = "2.0.104"
+syn = "2.0.106"
 thiserror = "2.0.12"
 tracing = "0.1.41"
 url = "2.5.4"