Do need to use iter over `list_spaces` anymore

Really just a nit FYI :)

`list(list_spaces(full=True, limit=None))` is valid in the most recent versions of `huggingface_hub`(at least the last 2 versions _I think_). You'll not get a warning when doing so :wink:

app.py

@@ -6,7 +6,7 @@ from toolz import groupby, valmap
 
 @cached(cache=TTLCache(maxsize=100, ttl=60 * 10))
 def get_spaces():
-    return list(iter(list_spaces(full=True, limit=None)))
+    return list(list_spaces(full=True, limit=None))
 
 
 get_spaces()  # to warm up the cache