fix: use super

Author: aMahanna

nx_arangodb/classes/multigraph.py

@@ -278,7 +278,7 @@ def has_edge_override(self, u, v, key=None):
 
     def copy_override(self, *args, **kwargs):
         logger.warning("Note that copying a graph loses the connection to the database")
-        G = Graph.copy(self, *args, **kwargs)
+        G = super().copy(*args, **kwargs)
         G.edge_key_dict_factory = nx.MultiGraph.edge_key_dict_factory
         return G