ci(rust): bump syn from 2.0.117 to 3.0.2

Bumps [syn](https://github.com/dtolnay/syn) from 2.0.117 to 3.0.2.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](dtolnay/syn@2.0.117...3.0.2)

---
updated-dependencies:
- dependency-name: syn
  dependency-version: 3.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Cargo.lock

@@ -12,5 +12,5 @@ proc-macro = true
 
 [dependencies]
 quote = "1"
-syn = { version = "2", features = ["full"] }
+syn = { version = "3", features = ["full"] }
 proc-macro2 = "1"