Update rubocop requirement from ~> 1.48.0 to ~> 1.49.0

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@v1.48.0...v1.49.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

sassc-embedded.gemspec

@@ -30,7 +30,7 @@ Gem::Specification.new do |spec| # rubocop:disable Gemspec/RequireMFA
   spec.add_development_dependency 'minitest', '~> 5.18.0'
   spec.add_development_dependency 'minitest-around', '~> 0.5.0'
   spec.add_development_dependency 'rake', '>= 10.0.0'
-  spec.add_development_dependency 'rubocop', '~> 1.48.0'
+  spec.add_development_dependency 'rubocop', '~> 1.49.0'
   spec.add_development_dependency 'rubocop-minitest', '~> 0.29.0'
   spec.add_development_dependency 'rubocop-performance', '~> 1.16.0'
   spec.add_development_dependency 'rubocop-rake', '~> 0.6.0'