What's Changed
* switch from macos-latest to macos-12 (as the former is now only available for arm64) by slayoo in https://github.com/numba-mpi/numba-mpi/pull/126
* sample benchmark script numba_mpi vs mpi4py+numba by Delcior in https://github.com/numba-mpi/numba-mpi/pull/127
* Readme updates by slayoo in https://github.com/numba-mpi/numba-mpi/pull/130
**Full Changelog**: https://github.com/numba-mpi/numba-mpi/compare/v0.40...v0.41
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