[pre-commit.ci] auto fixes from pre-commit.com hooks

pre-commit-ci[bot] · pre-commit-ci[bot] · commit cb2d96e11e0a · 2024-10-07T07:40:43.000Z
for more information, see https://pre-commit.ci
diff --git a/data_structures/binary_tree/maximum_sum_bst.py b/data_structures/binary_tree/maximum_sum_bst.py
@@ -9,8 +9,8 @@
 @dataclass
 class TreeNode:
     val: int = 0
-    left: Optional['TreeNode'] = None
-    right: Optional['TreeNode'] = None
+    left: Optional["TreeNode"] = None
+    right: Optional["TreeNode"] = None
 
 
 def max_sum_bst(root: TreeNode) -> int:
