Test using just-released commonmarker version

Gemfile

@@ -15,12 +15,11 @@ gem "uuidtools"
 group :development, :test do
   gem "ci_reporter_rspec"
   gem "climate_control"
-  gem "commonmarker", "< 2.0.0"
   gem "database_cleaner-active_record"
   gem "factory_bot"
   gem "govuk_schemas"
   gem "govuk_test"
-  gem "openapi3_parser", "~> 0.10.0"
+  gem "openapi3_parser", "~> 0.10.0" # This should be the same version as used in the tech-docs-gem
   gem "pact"
   gem "pry-byebug"
   gem "rspec-rails"

Gemfile.lock

@@ -102,11 +102,11 @@ GEM
       rspec (>= 2.14, < 4)
     climate_control (1.2.0)
     coderay (1.1.3)
-    commonmarker (1.1.5)
+    commonmarker (2.0.2.1)
       rb_sys (~> 0.9)
-    commonmarker (1.1.5-aarch64-linux)
-    commonmarker (1.1.5-arm64-darwin)
-    commonmarker (1.1.5-x86_64-linux)
+    commonmarker (2.0.2.1-aarch64-linux)
+    commonmarker (2.0.2.1-arm64-darwin)
+    commonmarker (2.0.2.1-x86_64-linux)
     concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     crack (1.0.0)
@@ -709,7 +709,7 @@ DEPENDENCIES
   bootsnap
   ci_reporter_rspec
   climate_control
-  commonmarker (< 2.0.0)
+  commonmarker (>= 2.0.0)
   database_cleaner-active_record
   deepsort
   factory_bot