Fix superclass keyword arguments in Python.

languages/tree-sitter-stack-graphs-python/src/stack-graphs.tsg

@@ -933,7 +933,10 @@ inherit .parent_module
 
 (class_definition
   superclasses: (argument_list
-    (_) @superclass)) @class
+    [
+      (identifier)
+      (attribute)
+    ] @superclass)) @class
 {
   edge @class.super_scope -> @superclass.output
 }

languages/tree-sitter-stack-graphs-python/test/superclasses.py

@@ -1,19 +1,22 @@
 class A:
+    def __init_subclass__(cls, foo):
+        pass
+
     def __init__(self):
         self.some_attr = 2
 
     def some_method(self):
         print self
 
-class B(A):
+class B(A, foo="Bar"):
     def method2(self):
         print self.some_attr, self.some_method()
-        #          ^ defined: 3
-        #                          ^ defined: 5, 14
+        #          ^ defined: 6
+        #                          ^ defined: 8, 17
 
     def some_method(self):
         pass
 
     def other(self):
         super().some_method()
-        #       ^ defined: 5
+        #       ^ defined: 8