Bump faker from 2.20.0 to 2.21.0 (#18434)

Bumps [faker](https://github.com/faker-ruby/faker) from 2.20.0 to 2.21.0.
- [Release notes](https://github.com/faker-ruby/faker/releases)
- [Changelog](https://github.com/faker-ruby/faker/blob/master/CHANGELOG.md)
- [Commits](https://github.com/faker-ruby/faker/compare/v2.20.0...v2.21.0)

---
updated-dependencies:
- dependency-name: faker
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

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

Gemfile

@@ -114,7 +114,7 @@ end
 group :test do
   gem 'capybara', '~> 3.37'
   gem 'climate_control', '~> 0.2'
-  gem 'faker', '~> 2.20'
+  gem 'faker', '~> 2.21'
   gem 'microformats', '~> 4.2'
   gem 'rails-controller-testing', '~> 1.0'
   gem 'rspec-sidekiq', '~> 3.1'