Bump json-schema from 3.0.0 to 4.0.0

Bumps [json-schema](https://github.com/voxpupuli/json-schema) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/voxpupuli/json-schema/releases)
- [Changelog](https://github.com/voxpupuli/json-schema/blob/master/CHANGELOG.md)
- [Commits](https://github.com/voxpupuli/json-schema/compare/v3.0.0...v4.0.0)

---
updated-dependencies:
- dependency-name: json-schema
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Gemfile

@@ -121,7 +121,7 @@ group :test do
   gem 'capybara', '~> 3.38'
   gem 'climate_control', '~> 0.2'
   gem 'faker', '~> 3.1'
-  gem 'json-schema', '~> 3.0'
+  gem 'json-schema', '~> 4.0'
   gem 'rack-test', '~> 2.0'  
   gem 'rails-controller-testing', '~> 1.0'
   gem 'rspec_junit_formatter', '~> 0.6'

Gemfile.lock

@@ -345,7 +345,7 @@ GEM
     json-ld-preloaded (3.2.2)
       json-ld (~> 3.2)
       rdf (~> 3.2)
-    json-schema (3.0.0)
+    json-schema (4.0.0)
       addressable (>= 2.8)
     jsonapi-renderer (0.2.2)
     jwt (2.5.0)
@@ -810,7 +810,7 @@ DEPENDENCIES
   idn-ruby
   json-ld
   json-ld-preloaded (~> 3.2)
-  json-schema (~> 3.0)
+  json-schema (~> 4.0)
   kaminari (~> 1.2)
   kt-paperclip (~> 7.1)
   letter_opener (~> 1.8)