Update brew prior to building substrate
Update brew prior to building substrate

mitchellh/vagrant-installers,mitchellh/vagrant-installers,chrisroberts/vagrant-installers,chrisroberts/vagrant-installers,mitchellh/vagrant-installers,chrisroberts/vagrant-installers,chrisroberts/vagrant-installers,mitchellh/vagrant-installers,chrisroberts/vagrant-installers,mitchellh/vagrant-installers,chrisroberts/vagrant-installers,mitchellh/vagrant-installers