Prop 193: Umee v6.7.3 Upgrade

Umee Blockchain upgrade to v6.7.x.

Release Notes and upgrade instructions: https://github.com/umee-network/umee/releases/tag/v6.7.3

Note: Collateral Transfer Fix - A confirmed SFRXETH supply isn't reflected in the balance. Upon approval, the supplied tokens will be transferred from the leverage module account to the user. Details: https://hackmd.io/@DCFJtA8FRayD6p1Q0XgZHQ/HkfelYUuJx