Bump database_cleaner from 1.8.5 to 2.0.0

Bumps [database_cleaner](https://github.com/DatabaseCleaner/database_cleaner) from 1.8.5 to 2.0.0.
- [Release notes](https://github.com/DatabaseCleaner/database_cleaner/releases)
- [Changelog](https://github.com/DatabaseCleaner/database_cleaner/blob/master/History.rdoc)
- [Commits](https://github.com/DatabaseCleaner/database_cleaner/compare/v1.8.5...v2.0.0)

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

Gemfile.lock

@@ -92,7 +92,7 @@ GEM
     bunny (2.17.0)
       amq-protocol (~> 2.3, >= 2.3.1)
     byebug (11.1.3)
-    capybara (3.35.1)
+    capybara (3.35.3)
       addressable
       mini_mime (>= 0.1.3)
       nokogiri (~> 1.8)
@@ -114,7 +114,12 @@ GEM
     crack (0.4.5)
       rexml
     crass (1.0.6)
-    database_cleaner (1.8.5)
+    database_cleaner (2.0.0)
+      database_cleaner-active_record (~> 2.0.0)
+    database_cleaner-active_record (2.0.0)
+      activerecord (>= 5.a)
+      database_cleaner-core (~> 2.0.0)
+    database_cleaner-core (2.0.0)
     debug_inspector (1.0.0)
     diff-lcs (1.4.4)
     docile (1.3.5)
@@ -215,7 +220,7 @@ GEM
     mnemosyne-ruby (1.11.0)
       activesupport (>= 4)
       bunny
-    msgpack (1.4.1)
+    msgpack (1.4.2)
     multi_json (1.15.0)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
@@ -352,7 +357,7 @@ GEM
       rspec-mocks (~> 3.10)
       rspec-support (~> 3.10)
     rspec-support (3.10.2)
-    rubocop (1.9.0)
+    rubocop (1.9.1)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)