Fix rust 1.65 lints (#3682)

## Issue Addressed

New lints for rust 1.65

## Proposed Changes

Notable change is the identification or parameters that are only used in recursion

## Additional Info
na

consensus/serde_utils/src/hex_vec.rs

@@ -10,7 +10,7 @@ where
     S: Serializer,
 {
     let mut hex_string: String = "0x".to_string();
-    hex_string.push_str(&hex::encode(&bytes));
+    hex_string.push_str(&hex::encode(bytes));
 
     serializer.serialize_str(&hex_string)
 }