feat: remove clone bound from GasEscalatorMiddleware (#13)

This trait bound isn't actually needed and conflicts with our providers,
since most of them aren't `Clone`

ethers-middleware/src/gas_escalator/mod.rs

@@ -137,7 +137,7 @@ where
  pub fn new(inner: M, escalator: E, frequency: Frequency) -> Self
  where
  E: Clone + 'static,
- M: Clone + 'static,
+ M: 'static,
  {
  use tracing_futures::Instrument;
 
@@ -202,7 +202,7 @@ where
  {
  Ok(new_tx_hash) => {
  let new_tx_hash = *new_tx_hash;
- tracing::trace!(
+ tracing::debug!(
  old_tx_hash = ?tx_hash,
  new_tx_hash = ?new_tx_hash,
  old_gas_price = ?old_gas_price,