Update price feeds in cUSDTv3 on Arbitrum with CAPO and SVR price feeds.

Proposal summary

This proposal updates existing price feeds for WETH, ARB, WBTC, wstETH and USDT assets on the USDT market on Arbitrum.

Further detailed information can be found on the corresponding proposal pull request, forum discussion for CAPO and forum discussion for SVR.

CAPO summary

CAPO is a price oracle adapter designed to support assets that grow gradually relative to a base asset - such as liquid staking tokens that accumulate yield over time. It provides a mechanism to track this expected growth while protecting downstream protocol from sudden or manipulated price spikes. wstETH price feed are updated to their CAPO implementations.

CAPO audit

CAPO has been audited by [OpenZeppelin](https://www.comp.xyz/t/capo-price-feed-audit/6631, as well as the LST / LRT implementation here.

SVR fee recipient

SVR generates revenue from liquidators and Compound DAO will receive that revenue as part of the protocol fee. The fee recipient for SVR is set to Compound DAO multisig: 0xd9496F2A3fd2a97d8A4531D92742F3C8F53183cB.

Proposal actions

The first action updates WETH, ARB, WBTC, wstETH and USDT price feeds to the SVR implementation. This sends the encoded 'updateAssetPriceFeed' and 'deployAndUpgradeTo' calls across the bridge to the governance receiver on Arbitrum.

https://tally.xyz/gov/compound/proposal/531