Bump syn from 2.0.91 to 2.0.93 (oxidecomputer#1026)

Author: dependabot[bot]

Cargo.lock

@@ -49,7 +49,7 @@ serde = { version = "1.0.215", features = ["derive"] }
 serde_json = "1.0.134"
 serde_urlencoded = "0.7.1"
 serde_yaml = "0.9"
-syn = { version = "2.0.91", features = ["parsing"] }
+syn = { version = "2.0.93", features = ["parsing"] }
 thiserror = "2.0.9"
 tokio = { version = "1.42.0", features = ["rt", "net"] }
 # change when publishing