### New features

* [#9930](https://github.com/rubocop/rubocop/pull/9930): Support Ruby 2.7's pattern matching for `Lint/DuplicateBranch` cop. ([@koic][])

### Bug fixes

* [#9938](https://github.com/rubocop/rubocop/pull/9938): Fix an incorrect auto-correct for `Layout/LineLength` when a heredoc is used as the first element of an array. ([@koic][])
* [#9940](https://github.com/rubocop/rubocop/issues/9940): Fix an incorrect auto-correct for `Style/HashTransformValues` when value is a hash literal for `_.to_h{...}`. ([@koic][])
* [#9752](https://github.com/rubocop/rubocop/issues/9752): Improve error message for top level department used in configuration. ([@jonas054][])
* [#9933](https://github.com/rubocop/rubocop/pull/9933): Fix GitHub Actions formatter when running in non-default directory. ([@ojab][])
* [#9922](https://github.com/rubocop/rubocop/issues/9922): Make better auto-corrections in `Style/DoubleCopDisableDirective`. ([@jonas054][])
* [#9848](https://github.com/rubocop/rubocop/issues/9848): Fix handling of comments in `Layout/ClassStructure` auto-correct. ([@jonas054][])
* [#9926](https://github.com/rubocop/rubocop/pull/9926): Fix an incorrect auto-correct for `Style/SingleLineMethods` when method body is enclosed in parentheses. ([@koic][])
* [#9928](https://github.com/rubocop/rubocop/issues/9928): Fix an infinite loop error and a false auto-correction behavior for `Layout/EndAlignment` when using operator methods and `EnforcedStyleAlignWith: variable`. ([@koic][])
* [#9434](https://github.com/rubocop/rubocop/issues/9434): Fix false positive for setter calls in `Layout/FirstArgumentIndentation`. ([@jonas054][])

[@koic]: https://github.com/koic
[@jonas054]: https://github.com/jonas054
[@ojab]: https://github.com/ojab
