[libcxx-commits] [libcxx] [libc++] Reduce the number of runs on the format_to{, n} and formatted_size benchmarks (PR #179922)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne approved this pull request.

How much time do we save? Please record that in your PR description.

https://github.com/llvm/llvm-project/pull/179922