Explicitly cast exclude_graph_view to DiGraph to fix unknown member

Author: ByteOtter

src/gardenlinux/features/parser.py

@@ -8,7 +8,7 @@
 import os
 from glob import glob
 from pathlib import Path
-from typing import Callable, Optional
+from typing import Callable, Optional, cast
 
 import networkx
 import yaml
@@ -245,7 +245,9 @@ def _exclude_from_filter_set(self, graph, input_features, filter_set):
         :since: 0.7.0
         """
 
-        exclude_graph_view = Parser._get_graph_view_for_attr(graph, "exclude")
+        exclude_graph_view = cast(
+            networkx.DiGraph, Parser._get_graph_view_for_attr(graph, "exclude")
+        )
         exclude_list = []
 
         for node in networkx.lexicographical_topological_sort(graph):