bbatsov/rubocop

### Bug fixes

* [#6267](https://github.com/rubocop/rubocop/pull/6267): Fix undefined method 'method_name' for `Rails/FindEach`. ([@Knack][])
* [#6278](https://github.com/rubocop/rubocop/pull/6278): Fix false positive for `Naming/FileName` when investigating gemspecs. ([@kddeisz][])
* [#6256](https://github.com/rubocop/rubocop/pull/6256): Fix false positive for `Naming/FileName` when investigating dotfiles. ([@sinsoku][])
* [#6242](https://github.com/rubocop/rubocop/pull/6242): Fix `Style/EmptyCaseCondition` auto-correction removes comment between `case` and first `when`. ([@koic][])
* [#6261](https://github.com/rubocop/rubocop/pull/6261): Fix undefined method error for `Style/RedundantBegin` when calling `super` with a block. ([@eitoball][])
* [#6263](https://github.com/rubocop/rubocop/issues/6263): Fix an error `Layout/EmptyLineAfterGuardClause` when guard clause is after heredoc including string interpolation. ([@koic][])
* [#6281](https://github.com/rubocop/rubocop/pull/6281): Fix false negative in `Style/MultilineMethodSignature`. ([@drenmi][])
* [#6264](https://github.com/rubocop/rubocop/issues/6264): Fix an incorrect autocorrect for `Layout/EmptyLineAfterGuardClause` cop when `if` condition is after heredoc. ([@koic][])

### Changes

* [#6272](https://github.com/rubocop/rubocop/pull/6272): Make `Lint/UnreachableCode` detect `exit`, `exit!` and `abort`. ([@hoshinotsuyoshi][])
* [#6295](https://github.com/rubocop/rubocop/pull/6295): Exclude `#===` from `Naming/BinaryOperatorParameterName`. ([@zverok][])
* Add `+` to allowed file names of `Naming/FileName`. ([@yensaki][])

[@Knack]: https://github.com/Knack
[@kddeisz]: https://github.com/kddeisz
[@sinsoku]: https://github.com/sinsoku
[@koic]: https://github.com/koic
[@eitoball]: https://github.com/eitoball
[@drenmi]: https://github.com/drenmi
[@hoshinotsuyoshi]: https://github.com/hoshinotsuyoshi
[@zverok]: https://github.com/zverok
[@yensaki]: https://github.com/yensaki