Bump faker from 2.1.2 to 2.2.1

Bumps [faker](https://github.com/faker-ruby/faker) from 2.1.2 to 2.2.1.
- [Release notes](https://github.com/faker-ruby/faker/releases)
- [Changelog](https://github.com/faker-ruby/faker/blob/master/CHANGELOG.md)
- [Commits](faker-ruby/faker@v2.1.2...v2.2.1)

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

Author: dependabot-preview[bot]

Gemfile.lock

@@ -86,7 +86,7 @@ GEM
       unf (>= 0.0.5, < 1.0.0)
     erubi (1.8.0)
     execjs (2.7.0)
-    faker (2.1.2)
+    faker (2.2.1)
       i18n (>= 0.8)
     faraday (0.15.4)
       multipart-post (>= 1.2, < 3)