Update rubocop requirement from 1.64.1 to 1.65.1

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@v1.64.1...v1.65.1)

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

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

Gemfile

@@ -5,7 +5,7 @@ gem "minitest", "~> 5.0"
 gem "minitest-rg", "~> 5.3"
 gem "mocha", "~> 2.0"
 gem "rake", "~> 13.0"
-gem "rubocop", "1.64.1"
+gem "rubocop", "1.65.1"
 gem "rubocop-minitest", "0.35.1"
 gem "rubocop-packaging", "0.5.2"
 gem "rubocop-performance", "1.21.1"