Disabled Nx daemon

refs https://github.com/TryGhost/DevOps/issues/102

- we've been seeing various bugs relating to the Nx daemon, and when it
  crashes it nukes the entire dev command, which we'd like to avoid
- this should disable the daemon until some of these issues are fixed

nx.json

@@ -10,6 +10,7 @@
                     "test",
                     "test:unit"
                 ],
+                "useDaemonProcess": false,
                 "cacheDirectory": ".nxcache"
             }
         }