Chore: switch serialization test to maintained postcard crate

Author: alamb

arrow-schema/Cargo.toml

@@ -53,12 +53,9 @@ serde = ["dep:serde_core", "dep:serde"]
 all-features = true
 
 [dev-dependencies]
-bincode = { version = "2.0.1", default-features = false, features = [
-    "std",
-    "serde",
-] }
 criterion = { workspace = true, default-features = false }
 insta = "1.43.1"
+postcard = { version = "1.0.10", default-features = false, features = ["use-std"] }
 
 [[bench]]
 name = "ffi"

arrow-schema/src/field.rs

@@ -1448,10 +1448,8 @@ mod test {
 
     #[cfg(feature = "serde")]
     fn assert_binary_serde_round_trip(field: Field) {
-        let config = bincode::config::legacy();
-        let serialized = bincode::serde::encode_to_vec(&field, config).unwrap();
-        let (deserialized, _): (Field, _) =
-            bincode::serde::decode_from_slice(&serialized, config).unwrap();
+        let serialized = postcard::to_stdvec(&field).unwrap();
+        let deserialized: Field = postcard::from_bytes(&serialized).unwrap();
         assert_eq!(field, deserialized)
     }