Feature Summary

We need to test, validate, and ship the upgrade to CometBFT-rs so that we can safely sunset Tendermint-rs eventually.

Tasks

• This work is paired with Hermes-side migration
  • Adapt to cometbft-rs hermes#3820
  • the migration on the two repos should proceed in tandem for end-to-end testing that IBC relaying is not impacted by this migration
• Announce this testing and the planned migration to all users of IBC-rs (maybe in community call) to give them an early notification