build(deps-dev): bump machinist from 1.0.6 to 2.0

Bumps [machinist](https://github.com/notahat/machinist) from 1.0.6 to 2.0.
- [Commits](notahat/machinist@v1.0.6...v2.0)

---
updated-dependencies:
- dependency-name: machinist
  dependency-version: '2.0'
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Gemfile

@@ -65,7 +65,7 @@ end
 
 group :test do
   gem 'codeclimate-test-reporter', '>= 1.0.8', require: false
-  gem 'machinist', '~> 1.0.6'
+  gem 'machinist', '~> 2.0'
   gem 'mock_redis'
   gem 'parallel_tests'
   gem 'rack-test'

Gemfile.lock

@@ -289,7 +289,7 @@ GEM
     loofah (2.25.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
-    machinist (1.0.6)
+    machinist (2.0)
     method_source (1.1.0)
     mime-types (3.7.0)
       logger
@@ -637,7 +637,7 @@ DEPENDENCIES
   json-schema
   listen
   loggregator_emitter (~> 5.0)
-  machinist (~> 1.0.6)
+  machinist (~> 2.0)
   mime-types (~> 3.7)
   mock_redis
   multipart-parser