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

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cs/structures/heap/fibonacci_heap.py

@@ -349,8 +349,7 @@ def dequeue(self) -> tuple[T, float]:
             # reparent operation that merged two different trees of equal
             # priority, we need to make sure that the min pointer points to
             # the root-level one.
-            if curr <= self.top:
-                self.top = curr
+            self.top = min(self.top, curr)
         if not self.allow_duplicates:
             del self.elem_to_entry[min_elem.value]
         return return_val