Consider testing against YARP's fixtures

[andyw8]

Is your feature request related to a problem? Please describe.

Writing cops which work against all possible Ruby syntax variations can be difficult. In particulary, newly added a cops often need fixes once they are enabled on real world codebases.

Describe the solution you'd like

The YARP project contains a large collection of fixtures which may be useful to test against:

https://github.com/ruby/yarp/tree/main/test/fixtures

Running it against the latest RuboCop shows one failure currently:

An error occurred while Lint/SuppressedException cop was inspecting /Users/andyw8/src/github.com/Shopify/yarp/test/fixtures/rescue.rb:26:34.

The YARP fixtures could be added as a submodule.

Describe alternatives you've considered

n/a

Additional context

I initially thought this may have prevented #12079 but there's no fixture in YARP for that currently. I still believe it could be useful to test against though.

[koic]

That's an interesting idea, but its implementation needs to be considered. In the meantime, I opened #12086 to prevent the Lint/SuppressedException's error.

[andyw8]

@koic Since #12086 only fixes the example mentioned in the description rather than addressing the idea itself, should this be kept open?