Update rubocop-rake requirement from 0.6.0 to 0.7.1 (#413)

Updates the requirements on [rubocop-rake](https://github.com/rubocop/rubocop-rake) to permit the latest version.
- [Release notes](https://github.com/rubocop/rubocop-rake/releases)
- [Changelog](https://github.com/rubocop/rubocop-rake/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-rake@v0.6.0...v0.7.1)

---
updated-dependencies:
- dependency-name: rubocop-rake
  dependency-version: 0.7.1
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile

@@ -7,7 +7,7 @@ gemspec
 gem 'coveralls', require: false
 gem 'rubocop', '1.75.3', require: false
 gem 'rubocop-performance', '1.23.1', require: false
-gem 'rubocop-rake', '0.6.0', require: false
+gem 'rubocop-rake', '0.7.1', require: false
 gem 'rubocop-rspec', '3.4.0', require: false
 gem "base64", "~> 0.2.0"
 gem "bigdecimal", "~> 3.1"