I published a new version of the codeowners binary that speeds up the checks https://github.com/mongodb-forks/codeowners

Before the binary ran everything sequentially and now it uses go coroutines to speed things up. It also checks file prefixes before checking the whole pattern to skip unrelated files faster. I validated to make sure the output of the program is exactly the same. Here is a chart showing the difference.

Out current `bazel run codeowners` has to run this codeowners binary twice to get the before/after effect so this speedup is doubled in precommit-hooks/ci tasks.