feat: updates, make clippy happy

src/util_simple_pbe.rs

@@ -157,7 +157,7 @@ fn simple_pbkdf(password: &[u8], salt: &[u8], repetition: u32, iterations: u32)
         for _ in 0..repetition {
             message.extend_from_slice(&it.to_be_bytes());
             message.extend_from_slice(&input);
-            message.extend_from_slice(&salt);
+            message.extend_from_slice(salt);
         }
         input = util_digest::sha256_digest(&message);
     }