Properly classify Paraswap rate limits (#1824)

Paraswap rate limit responses are currently not properly converted into
rate limit errors. This PR replaces the catch all case in the enum to
make sure the compiler forces us to think about this conversion if we
add another Paraswap error type.

crates/shared/src/trade_finding/paraswap.rs

@@ -174,7 +174,11 @@ impl From<ParaswapResponseError> for TradeError {
     fn from(err: ParaswapResponseError) -> Self {
         match err {
             ParaswapResponseError::InsufficientLiquidity(_) => Self::NoLiquidity,
-            _ => Self::Other(err.into()),
+            ParaswapResponseError::RateLimited => Self::RateLimited,
+            ParaswapResponseError::Request(_)
+            | ParaswapResponseError::Json(_)
+            | ParaswapResponseError::Retryable(_)
+            | ParaswapResponseError::Other(_) => Self::Other(err.into()),
         }
     }
 }