Update dependency rubocop to v1.63.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rubocop (source, changelog)	'1.63.3' -> '1.63.4'

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Release Notes

rubocop/rubocop (rubocop)

### [`v1.63.4`](https://togithub.com/rubocop/rubocop/blob/HEAD/CHANGELOG.md#1634-2024-04-28) [Compare Source](https://togithub.com/rubocop/rubocop/compare/v1.63.3...v1.63.4) ##### Bug fixes - [#​12871](https://togithub.com/rubocop/rubocop/pull/12871): Fix an error for `rubocop -V` when `.rubocop.yml` contains ERB. (\[[@​earlopain](https://togithub.com/earlopain)]\[]) - [#​12862](https://togithub.com/rubocop/rubocop/issues/12862): Fix a false positive for `Style/RedundantLineContinuation` when line continuations involve `return` with a return value. (\[[@​koic](https://togithub.com/koic)]\[]) - [#​12664](https://togithub.com/rubocop/rubocop/pull/12664): Fix handling of `textDocument/diagnostic`. (\[[@​muxcmux](https://togithub.com/muxcmux)]\[]) - [#​12865](https://togithub.com/rubocop/rubocop/issues/12865): Fix Rails Cops, which weren't reporting any violations unless running with `bundle exec`. (\[[@​amomchilov](https://togithub.com/amomchilov)]\[])

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 34.88%. Comparing base (a3fa2f2) to head (64acb45).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #613 +/- ## ======================================= Coverage 34.88% 34.88% ======================================= Files 47 47 Lines 1307 1307 ======================================= Hits 456 456 Misses 851 851 ```

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[yegor256]

@rultor please, try to merge, since 4 checks have passed

[rultor]

@rultor please, try to merge, since 4 checks have passed

@yegor256 OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor please, try to merge, since 4 checks have passed

@yegor256 Done! FYI, the full log is here (took me 8min)