build(deps): update syn requirement from =2.0.35 to =2.0.37

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@2.0.35...2.0.37)

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

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

arbiter-derive/Cargo.toml

@@ -12,6 +12,6 @@ readme = "../README.md"
 proc-macro = true
 
 [dependencies]
-syn = { version = "=2.0.35" }
+syn = { version = "=2.0.37" }
 quote = { version = "=1.0.33" }
 proc-macro2 = { version = "=1.0.67" }