Upgrade Neutron from v1.0.0-rc1 to v1.0.2-pion-1-upgrade

Wednesday 14th June 15:00 UTC block height 1688800 may arrive earlier Exact upgrade time can be checked here. https://github.com/neutron-org/neutron/releases/tag/v1.0.2-pion-1-upgrade chain upgrade height : 1688800 Go version has been frozen at 1.20. If you are going to build Neu…