Eliminate syn 1 from minimal-versions

Author: dtolnay

Cargo.toml

@@ -15,16 +15,16 @@ rust-version = "1.56"
 proc-macro = true
 
 [dependencies]
-proc-macro2 = "1.0"
-quote = "1.0"
-syn = { version = "2.0.9", features = ["full", "visit-mut"] }
+proc-macro2 = "1.0.63"
+quote = "1.0.29"
+syn = { version = "2.0.23", features = ["full", "visit-mut"] }
 
 [dev-dependencies]
-futures = "0.3"
-rustversion = "1.0"
-tracing = "0.1.14"
-tracing-attributes = "0.1.14"
-trybuild = { version = "1.0.49", features = ["diff"] }
+futures = "0.3.28"
+rustversion = "1.0.13"
+tracing = "0.1.37"
+tracing-attributes = "0.1.26"
+trybuild = { version = "1.0.81", features = ["diff"] }
 
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]