Bump syn from 2.0.108 to 2.0.109

Bumps [syn](https://github.com/dtolnay/syn) from 2.0.108 to 2.0.109.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](dtolnay/syn@2.0.108...2.0.109)

---
updated-dependencies:
- dependency-name: syn
  dependency-version: 2.0.109
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Cargo.lock

@@ -17,7 +17,7 @@ proc-macro = true
 [dependencies]
 proc-macro2 = { version = "1.0.103", default-features = false }
 quote = { version = "1.0.41", default-features = false }
-syn = { version = "2.0.108", features = [
+syn = { version = "2.0.109", features = [
   "clone-impls", # for clone() debug only, ideally should be not used
   "full",
   "parsing",