fix: catch the latest version of Axon

[yangby-cryptape]

Fix Axon Web3 Compatible Tests since axonweb3/axon#1396.

The error message will be "[ProtocolError] Kind: Types Error: Hex should start with 0x".

References:

• Code#1

  String::deserialize(deserializer)
      .and_then(|s| Hex::from_str(&s).map_err(serde::de::Error::custom))

• Code#2

  if !Self::is_prefixed(s) {
      return Err(TypesError::HexPrefix.into());
  }

• Code#3

  pub enum TypesError {
      /* ... */
      #[display(fmt = "Hex should start with 0x")]
      HexPrefix,
      /* ... */
  }

⚠️ I don't have development environment of Web3 Compatible Tests, so I didn't do tests before I pushed this PR. 🤡