Fix for Method input parameters must be final compilation error (#6778

)

Signed-off-by: Fabio Di Fabio <[email protected]>

ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/response/RpcErrorType.java

@@ -239,7 +239,7 @@ public enum RpcErrorType implements RpcMethodError {
   }
 
   RpcErrorType(
-      final int code, final String message, Function<String, Optional<String>> dataDecoder) {
+      final int code, final String message, final Function<String, Optional<String>> dataDecoder) {
     this.code = code;
     this.message = message;
     this.dataDecoder = dataDecoder;