chore(users): grfn -> aspen

Change-Id: I6c6847fac56f0a9a1a2209792e00a3aec5e672b9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10809
Autosubmit: aspen <root@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Reviewed-by: lukegb <lukegb@tvl.fyi>

users/aspen/xanthous/hie.yaml

@@ -0,0 +1,10 @@
+cradle:
+  cabal:
+    - path: './src'
+      component: 'lib:xanthous'
+    - path: './test'
+      component: 'test:test'
+    - path: './app'
+      component: 'exe:xanthous'
+    - path: './bench'
+      component: 'bench:benchmark'