Prop 31: Revive Secret-Agoric IBC client - Fix for IBC between chains and stuck users

This proposal will update the currently frozen IBC client for channel-10 on Agoric (channel-51 on Secret). The frozen client 07-tendermint-17 will be substituted by a new client 07-tendermint-21. For questions about this proposal please contact Ertemann from Lavender.Five Nodes. Upon completion of the proposal the community will once again be able to use sBLD & sIST and transfer SCRT, BLD & IST back and forth between both chains.