chore: merge upstream gas escalator and run test

[daniel-savu]

Fixes some issues @tkporter brought up in hyperlane-xyz/hyperlane-monorepo#3852 (review):

1. Holding mutex lock across gas escalations (fixed upstream, I just merged the changes)
2. Silently ignoring nonce related errors: added a warn log. These error are only expected to occur if the original tx landed onchain though
3. I ran the unit test that comes with this middleware, and similar to what Trevor pointed out, sending a tx returns a PendingTransaction whose tx hash will not reflect the hash of the tx that lands onchain. However I manually checked by polling anvil and emitting logs that the gas is escalated and the final tx is finalized