perf: Try to improve set_integration_benchmark.cairo

[StringNick]

Try to improve this cairo benchmark.
currently with m1 pro i have this results:

Benchmark 2: cairo-vm (Zig)
  Time (mean ± σ):     512.9 ms ±   6.8 ms    [User: 471.4 ms, System: 32.5 ms]
  Range (min … max):   507.0 ms … 531.4 ms    10 runs

with some intel linux pc:

Benchmark 2: cairo-vm (Zig)
  Time (mean ± σ):      1.821 s ±  0.059 s    [User: 1.581 s, System: 0.239 s]
  Range (min … max):    1.749 s …  1.947 s    10 runs