SOLID SERVER: Upgrade CSS on `solidcommunity.au`

[cdawei]

Our dev team has reported that the CSS solid server deployed on solidcommunity.au is unstable recently. Its current CSS version is

cat ~/server/.internal/setup/current-server-version\$.json 
{"key":"setup/current-server-version","payload":"7.0.2"}

Another server with a newer version seems to be pretty stable, its CSS version is

cat ~/server/.internal/setup/current-server-version\$.json 
{"key":"setup/current-server-version","payload":"7.1.0"}

Perhaps the one on solidcommunity.au can be upgraded to v7.1.0 or the latest stable CSS release.