Update dependency json-schema to v6 (#35754)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Gemfile

@@ -146,7 +146,7 @@ group :test do
   gem 'climate_control'
 
   # Validate schemas in specs
-  gem 'json-schema', '~> 5.0'
+  gem 'json-schema', '~> 6.0'
 
   # Test harness fo rack components
   gem 'rack-test', '~> 2.1'

Gemfile.lock

@@ -365,7 +365,7 @@ GEM
     json-ld-preloaded (3.3.2)
       json-ld (~> 3.3)
       rdf (~> 3.3)
-    json-schema (5.2.1)
+    json-schema (6.0.0)
       addressable (~> 2.8)
       bigdecimal (~> 3.1)
     jsonapi-renderer (0.2.2)
@@ -1003,7 +1003,7 @@ DEPENDENCIES
   jd-paperclip-azure (~> 3.0)
   json-ld
   json-ld-preloaded (~> 3.2)
-  json-schema (~> 5.0)
+  json-schema (~> 6.0)
   kaminari (~> 1.2)
   kt-paperclip (~> 7.2)
   letter_opener (~> 1.8)