IIP-132: Update Meta Governance Multisig Signers

The Meta Governance Multisig was created to delegate the voting power for Aave, Compound and Uniswap to a group of Index community members (see IIP-45). With the introduction of the Meta Governance Committee, access to the Multi-sig was transferred over to the MGC via IIP-81. More Info at https://gov.indexcoop.com/t/iip-132-update-meta-governance-multisig-signers/3832 Please vote!