Bump shoulda-matchers from 2.7.0 to 4.2.0

Bumps [shoulda-matchers](https://github.com/thoughtbot/shoulda-matchers) from 2.7.0 to 4.2.0.
- [Release notes](https://github.com/thoughtbot/shoulda-matchers/releases)
- [Changelog](https://github.com/thoughtbot/shoulda-matchers/blob/master/NEWS.md)
- [Commits](thoughtbot/shoulda-matchers@v2.7.0...v4.2.0)

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

Author: dependabot-preview[bot]

Gemfile

@@ -76,7 +76,7 @@ group :test do
   gem 'capybara'
   gem "database_cleaner"
   gem "launchy"
-  gem "shoulda-matchers", "~> 2.7.0"
+  gem "shoulda-matchers", "~> 4.2.0"
   gem "simplecov", require: false
   gem "timecop"
   gem "webmock"

Gemfile.lock

@@ -837,8 +837,8 @@ GEM
     select2-rails (3.5.9.3)
       thor (~> 0.14)
     sexp_processor (4.6.1)
-    shoulda-matchers (2.7.0)
-      activesupport (>= 3.0.0)
+    shoulda-matchers (4.2.0)
+      activesupport (>= 4.2.0)
     simple_form (4.0.0)
       actionpack (> 4)
       activemodel (> 4)
@@ -951,7 +951,7 @@ DEPENDENCIES
   rspec-rails (~> 3.8)
   sass-rails (~> 5.0.1)
   select2-rails
-  shoulda-matchers (~> 2.7.0)
+  shoulda-matchers (~> 4.2.0)
   simple_form (~> 4.0.0)
   simplecov
   spring