Update min deposit for governance proposals

Description

This proposal sets a minimum deposit of 1000000 AXL for any governance proposals for the Axelar gateway contracts as mentioned here: https://community.axelar.network/t/temperature-check-increased-minimum-deposit-of-1m-axl-for-any-governance-proposals-for-the-axelar-gateway-contracts/2814 https://community.axelar.network/t/temperature-check-increased-minimum-deposit-of-1m-axl-for-any-governance-proposals-for-the-axelar-gateway-contracts/2814