[benchmark] Adjust scaling

Author: lorentey

benchmark/single-source/RandomTree.swift

@@ -16,7 +16,7 @@
 import TestsUtils
 
 var rng = SplitMix64(seed: 0)
-let count = 10_000
+let count = 400
 let input = (0 ..< count).shuffled(using: &rng)
 
 public let RandomTree = [