Update rubocop requirement from ~> 1.60.1 to ~> 1.62.1

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@v1.60.1...v1.62.1)

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

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

confset.gemspec

@@ -27,7 +27,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "simplecov", "~> 0.22.0"
   s.add_development_dependency "mdl", "~> 0.13.0"
   s.add_development_dependency "pry", "~> 0.14.2"
-  s.add_development_dependency "rubocop", "~> 1.60.1"
+  s.add_development_dependency "rubocop", "~> 1.62.1"
   s.add_development_dependency "rubocop-packaging"
   s.add_development_dependency "rubocop-performance"
 end