refactor: Async ThreadPool 스레드 수 변경 #607

All 364 tests pass in 14s

  87 files ±0   87 suites ±0 14s ⏱️ -1s
364 tests ±0 364 ✔️ ±0 0 💤 ±0 0 ❌ ±0
370 runs ±0 370 ✔️ ±0 0 💤 ±0 0 ❌ ±0

Results for commit 9fd8651. ± Comparison against earlier commit 5604c11.