Bump syn from 2.0.101 to 2.0.103 (#846)

Bumps [syn](https://github.com/dtolnay/syn) from 2.0.101 to 2.0.103.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](dtolnay/syn@2.0.101...2.0.103)

---
updated-dependencies:
- dependency-name: syn
  dependency-version: 2.0.103
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -38,7 +38,7 @@ schemars = "0.8.22"
 semver = "1.0.26"
 serde = "1.0.219"
 serde_json = "1.0.140"
-syn = { version = "2.0.101", features = ["full"] }
+syn = { version = "2.0.103", features = ["full"] }
 tempdir = "0.3.7"
 thiserror = "2.0.12"
 trybuild = "1.0.105"