MAINT: Update bincode in serialization tests to 0.9
diff --git a/serialization-tests/Cargo.toml b/serialization-tests/Cargo.toml
index 8f9b354..8837c0d 100644
--- a/serialization-tests/Cargo.toml
+++ b/serialization-tests/Cargo.toml
@@ -20,5 +20,5 @@
 [dev-dependencies]
 serde_json = "1.0"
 quickcheck = { version = "0.4", default-features = false }
-bincode = { version = "0.8" }
+bincode = { version = "0.9" }
 defmac = "0.1"