chore(deps): update syn requirement from 2.0.66 to 3.0.3

Updates the requirements on [syn](https://github.com/dtolnay/syn) to permit the latest version.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](dtolnay/syn@2.0.66...3.0.3)

---
updated-dependencies:
- dependency-name: syn
  dependency-version: 3.0.3
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

derive-impl/Cargo.toml

@@ -15,5 +15,5 @@ proc-macro = true
 proc-macro2 = { version = "1.0.24", features = ["span-locations"] }
 proc-macro-crate = "3.1.0"
 quote = "1.0.7"
-syn = "2.0.66"
+syn = "3.0.3"
 synstructure = "0.13.1"