bbatsov/rubocop

### Bug fixes

* [#9083](https://github.com/rubocop/rubocop/pull/9083): Fix `Style/RedundantArgument` cop raising offense for more than one argument. ([@tejasbubane][])
* [#9089](https://github.com/rubocop/rubocop/issues/9089): Fix an incorrect auto-correct for `Style/FormatString` when using sprintf with second argument that uses an operator. ([@koic][])
* [#7670](https://github.com/rubocop/rubocop/issues/7670): Handle offenses inside heredocs for `-a --disable-uncorrectable`. ([@jonas054][])
* [#9070](https://github.com/rubocop/rubocop/issues/9070): Fix `Lint/UnmodifiedReduceAccumulator` error when the block does not have enough arguments. ([@dvandersluis][])

### Changes

* [#9091](https://github.com/rubocop/rubocop/pull/9091): Have `Naming/VariableNumber` accept _1, _2, ... ([@marcandre][])
* [#9087](https://github.com/rubocop/rubocop/pull/9087): Deprecate `EnforceSuperclass` module. ([@koic][])

[@tejasbubane]: https://github.com/tejasbubane
[@koic]: https://github.com/koic
[@jonas054]: https://github.com/jonas054
[@dvandersluis]: https://github.com/dvandersluis
[@marcandre]: https://github.com/marcandre