4.2.5 / 2025-07-05

Codename: Surprise dependency

Small improvements

#324 Do not use benchmark gem in production: Ruby 3.5 is moving Benchmark out of default gems, so we need to explicitly install it from Rubygems in dev. It turned out we were also using it in prod code, so this PR replaced that usage with a small method that makes calls to Process.clock_gettime(Process::CLOCK_MONOTONIC).