Added extra tests to Ghost-CLI GitHub Action
Added extra tests to Ghost-CLI GitHub Action

no issue

- test for a clean install and updating from the latest release
- upgrading from the previous major is waiting on an update from
  Ghost-CLI

kevinansfield/Ghost,JohnONolan/Ghost,bitjson/Ghost,kevinansfield/Ghost,JohnONolan/Ghost,kevinansfield/Ghost,e10/Ghost,e10/Ghost,janvt/Ghost,ErisDS/Ghost,janvt/Ghost,TryGhost/Ghost,ErisDS/Ghost,ErisDS/Ghost,TryGhost/Ghost,JohnONolan/Ghost,bitjson/Ghost,TryGhost/Ghost