[TFIP-30] Update to multi-sig signer

[Suvicrypto]

Please note that I believe this is a small adjustment to be voted - on a previous governance proposal, so it doesn’t need a snapshot vote and can go direct to Tally.

[TFIP-16.1] Restoration of governance procedures and reassignment of Canceller multi-signature wallet *modified*

Summary Following great suggestions from @kaimi and @TylerEther , this proposal below builds on the previous [TFIP-16] maintaining the previously mentioned governance improvements while modifying the technical process of changing the new CANCELLER role. This means both the revocation of the old multisignature and approval of the new one will be completed in one transaction. Abstract As part of the current transition, there is a clear need to (1) reinstate the governance procedures and (2) impl…