Consider using `test-prof` since it provides great tools to profile/understand/improve our test suite

I came accross https://github.com/palkan/test-prof yesterday and it seems that it contains a lot of useful tools: https://github.com/palkan/test-prof#table-of-contents

• We could enable the Rspec/AggregateFailures cop
• EventProf looks quite useful to get data on events such as factory.create or sidekiq.inline
• TagProf could also be tried to get insights on stats per tag
• Factory Doctor looks very interesting too
• Factory Prof with the flamegraph viz looks very cool
• Some tips and tricks could be used: https://github.com/palkan/test-prof/blob/master/README.md#tips-and-tricks-or-recipes