Bump faker from 2.4.0 to 2.6.0

Bumps [faker](https://github.com/faker-ruby/faker) from 2.4.0 to 2.6.0.
- [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/v2.4.0...v2.6.0)

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

Gemfile.lock

@@ -184,8 +184,8 @@ GEM
     factory_bot_rails (5.1.0)
       factory_bot (~> 5.1.0)
       railties (>= 4.2.0)
-    faker (2.4.0)
-      i18n (~> 1.6.0)
+    faker (2.6.0)
+      i18n (>= 1.6, < 1.8)
     faraday (0.17.0)
       multipart-post (>= 1.2, < 3)
     faraday_middleware (0.13.1)
@@ -242,7 +242,7 @@ GEM
     httparty (0.17.0)
       mime-types (~> 3.0)
       multi_xml (>= 0.5.2)
-    i18n (1.6.0)
+    i18n (1.7.0)
       concurrent-ruby (~> 1.0)
     i18n-tasks (0.9.29)
       activesupport (>= 4.0.2)