Update rubocop-rspec requirement from = 2.19.0 to 2.23.2

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@v2.19.0...v2.23.2)

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

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

Gemfile

@@ -33,7 +33,7 @@ group :development do
   gem "puppet-debugger", '~> 1.0',               require: false
   gem "rubocop", '= 1.48.1',                     require: false
   gem "rubocop-performance", '= 1.16.0',         require: false
-  gem "rubocop-rspec", '= 2.19.0',               require: false
+  gem "rubocop-rspec", '2.23.2',               require: false
   gem "puppet-strings", '~> 4.0',                require: false
   gem "rb-readline", '= 0.5.5',                  require: false, platforms: [:mswin, :mingw, :x64_mingw]
 end