Properly parse paraswap rate limits

src/infra/dex/paraswap/mod.rs

@@ -134,6 +134,7 @@ impl From<util::http::RoundtripError<dto::Error>> for Error {
                 "ESTIMATED_LOSS_GREATER_THAN_MAX_IMPACT"
                 | "No routes found with enough liquidity"
                 | "Too much slippage on quote, please try again" => Self::NotFound,
+                "Rate limited" => Self::RateLimited,
                 _ => Self::Api(err.error),
             },
         }