Bump faker from 1.8.7 to 1.9.1 (#8935)

Bumps [faker](https://github.com/stympy/faker) from 1.8.7 to 1.9.1.
- [Release notes](https://github.com/stympy/faker/releases)
- [Changelog](https://github.com/stympy/faker/blob/master/CHANGELOG.md)
- [Commits](https://github.com/stympy/faker/compare/v1.8.7...v1.9.1)

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

Gemfile

@@ -108,7 +108,7 @@ end
 group :test do
   gem 'capybara', '~> 3.9'
   gem 'climate_control', '~> 0.2'
-  gem 'faker', '~> 1.8'
+  gem 'faker', '~> 1.9'
   gem 'microformats', '~> 4.0'
   gem 'rails-controller-testing', '~> 1.0'
   gem 'rspec-sidekiq', '~> 3.0'

Gemfile.lock

@@ -204,7 +204,7 @@ GEM
       tzinfo
     excon (0.62.0)
     fabrication (2.20.1)
-    faker (1.8.7)
+    faker (1.9.1)
       i18n (>= 0.7)
     faraday (0.15.0)
       multipart-post (>= 1.2, < 3)
@@ -675,7 +675,7 @@ DEPENDENCIES
   doorkeeper (~> 5.0)
   dotenv-rails (~> 2.2, < 2.3)
   fabrication (~> 2.20)
-  faker (~> 1.8)
+  faker (~> 1.9)
   fast_blank (~> 1.0)
   fastimage
   fog-core (~> 2.1)