Installing posix-spawn can fail for Apple M3 environments

[jrgriffiniii]

I have encountered the following while attempting to install the Ruby Gem dependencies local to an environment with an Apple M3: rtomayko/posix-spawn#92

As detailed in rtomayko/posix-spawn#92 (comment), there is a solution with:

gem install posix-spawn -- --with-cflags="-Wno-incompatible-function-pointer-types"

I can propose that requesting that this be documented as a known bug, but I am not certain how this might be handled from the standpoint of maintaining a long-term dependency upon posix-spawn (this Gem does not appear to have been recently updated).