Update Ubuntu build instruction dependencies
Update Ubuntu build instruction dependencies

sgebbie/ponyc,ponylang/ponyc,jemc/ponyc,sgebbie/ponyc,sgebbie/ponyc,dipinhora/ponyc,sgebbie/ponyc,dipinhora/ponyc,dipinhora/ponyc,ponylang/ponyc,jemc/ponyc,ponylang/ponyc,sgebbie/ponyc,jemc/ponyc