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

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

data_structures/heap/skew_heap.py

@@ -5,10 +5,12 @@
 from collections.abc import Iterable, Iterator
 from typing import Any, Generic, TypeVar, Protocol
 
+
 class Comparable(Protocol):
     def __lt__(self, other: Any) -> bool: ...
     def __gt__(self, other: Any) -> bool: ...
 
+
 T = TypeVar("T", bound=Comparable)
 
 
@@ -90,6 +92,7 @@ def merge(
 
         return result
 
+
 class SkewHeap(Generic[T]):
     """
     A data structure that allows inserting a new value and to pop the smallest