On-chain proposal to reduce Filecoin block confirmations 🗳️

As recommended by Filecoin consensus team, required block confirmations on Axelar can be lowered from 100 to 30, reducing latency.

Discuss: https://community.axelar.network/t/reduce-filecoin-block-confirmations-to-30/2986

Vote: https://axelarscan.io/proposal/214