eIP 26: Promote cbETH to Collateral tier

Summary

The following specific changes are proposed:

• Increase collateral factor (CF) to 0.70
• Increase borrow factor (BF) to 0.80
• Decrease reserve factor (RF) to 0.05
• Amend oracle from Univ3 TWAP to Chainlink
• Amend the IR model to the same as wstETH

Further discussion can be found in the Request For Comment on the Governance forum.

Voting

The voting options are as follows:

• YES - implement the changes above
• NO - do not implement the changes above