Use json-schema just for tests

Add back to test group

Gemfile

@@ -414,6 +414,7 @@ group :development, :test, :omnibus do
 end
 
 group :test do
+  gem 'json-schema', '~> 2.8.0'
   gem 'fuubar', '~> 2.2.0'
   gem 'rspec-retry', '~> 0.6.1'
   gem 'rspec_profiling', '~> 0.0.6'

Gemfile.lock

@@ -643,6 +643,8 @@ GEM
       activesupport (>= 4.2)
       aes_key_wrap
       bindata
+    json-schema (2.8.1)
+      addressable (>= 2.4)
     json_schemer (0.2.12)
       ecma-re-validator (~> 0.2)
       hana (~> 1.3)
@@ -1464,6 +1466,7 @@ DEPENDENCIES
   jira-ruby (~> 2.1.4)
   js_regex (~> 3.4)
   json (~> 2.3.0)
+  json-schema (~> 2.8.0)
   json_schemer (~> 0.2.12)
   jwt (~> 2.1.0)
   kaminari (~> 1.0)

changelogs/unreleased/change-json-validation.yml

 ---
-title: Stop using json-schema gem
+title: Stop using json-schema gem for production
 merge_request: 56745
 author:
 type: other