Running `bundle exec rake/rspec spec` has failures on main branch

Running the Puppet specs using bundle exec rspec spec or bundle exec rake spec consistently produces these failures: https://gist.github.com/pcarlisle/42b9792d2f1d997d24c7f6736bfb8473. We can reproduce this in both a mac and a linux environment.

When those files are run individually or when using the parallel_spec rake task, nothing fails. So it would appear there's some kind of order dependent issue that's not getting picked up by Travis, which uses parallel_spec.