#13 Upgrade quicksilver to v1.2.10

This proposal aims to upgrade Quicksilver to v1.2.10 of quicksilverd.\n\nThis release contains:\n\n - Logic to periodically flush delegations that are unfinalised as a result of closed ICA channels\n - An upgrade handler to close the stargaze-1.delegate channel, so it can be reopened in order to force update delegation records