Update rubocop requirement from 1.44.1 to 1.63.4

Updates the requirements on [rubocop](https://github.com/rubocop/rubocop) to permit the latest version.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.44.1...v1.63.4)

---
updated-dependencies:
- dependency-name: rubocop
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -28,7 +28,7 @@ group :development do
 
   # rubocop
   if Gem::Requirement.new("~> 3.0").satisfied_by?(Gem::Version.new(RUBY_VERSION))
-    gem "rubocop", "1.44.1"
+    gem "rubocop", "1.63.4"
     gem "rubocop-minitest", "0.27.0"
     gem "rubocop-performance", "1.15.2"
     gem "rubocop-rake", "= 0.6.0"