Update rubocop-rspec requirement from 3.2.0 to 3.4.0 (#411)

Updates the requirements on [rubocop-rspec](https://github.com/rubocop/rubocop-rspec) to permit the latest version.
- [Release notes](https://github.com/rubocop/rubocop-rspec/releases)
- [Changelog](https://github.com/rubocop/rubocop-rspec/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-rspec@v3.2.0...v3.4.0)

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

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

Author: dependabot[bot]

Gemfile

@@ -8,7 +8,7 @@ gem 'coveralls', require: false
 gem 'rubocop', '1.69.0', require: false
 gem 'rubocop-performance', '1.23.1', require: false
 gem 'rubocop-rake', '0.6.0', require: false
-gem 'rubocop-rspec', '3.2.0', require: false
+gem 'rubocop-rspec', '3.4.0', require: false
 gem "base64", "~> 0.2.0"
 gem "bigdecimal", "~> 3.1"
 gem "csv", "~> 3.2"