Add rubocop-rspec_rails to beta

[fonji]

Same thing as #367 for the beta channel

Rubocop-rspec has extracted the rails cops to rubocop-rspec_rails

the cops related to rspec-rails are aliased (RSpec/Rails/Foo == RSpecRails/Foo) until v3.0 is released

https://github.com/rubocop/rubocop-rspec/blob/master/CHANGELOG.md#2280-2024-03-30

So it would be nice to support it before v3 is released

[hallelujah]

@fede-moya any chance this could be merged?

[vietqhoang]

+1 in getting this into beta. At the moment this particular issue is breaking our CodeClimate integration. We would like to not have to remove departments from the configuration. Open to the option to have CodeClimate configuration ignore these departments, if there is one.