Bump to Govspeak 6.3

A variety of fixes have been done to hopefully allow for Whitehall to
upgrade to this without problems 🤞 see
alphagov/govspeak#159 and
alphagov/govspeak#164 for details.

Author: kevindew

Gemfile

@@ -75,9 +75,7 @@ end
 if ENV['GOVSPEAK_DEV']
   gem 'govspeak', path: '../govspeak'
 else
-  # 5.5.0 only because sanitize 4.6.4 is stricter on govspeak, which makes attachments invalid
-  # See https://trello.com/c/90AjvFzy/77-whitehall-isnt-able-to-use-latest-govspeak-version
-  gem 'govspeak', '~> 5.5.0'
+  gem 'govspeak', '~> 6.3'
 end
 
 if ENV['FRONTEND_TOOLKIT_DEV']

Gemfile.lock

@@ -99,8 +99,6 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    commander (4.4.7)
-      highline (~> 2.0.0)
     concurrent-ruby (1.1.5)
     connection_pool (2.2.2)
     crack (0.4.3)
@@ -173,16 +171,17 @@ GEM
       activemodel (>= 4.2, < 6.1)
       activerecord (>= 4.2, < 6.1)
       request_store (~> 1.0)
-    govspeak (5.5.0)
-      actionview (>= 4.1, < 6)
+    govspeak (6.3.0)
+      actionview (~> 5.0)
       addressable (>= 2.3.8, < 3)
-      commander (~> 4.4)
+      govuk_publishing_components (>= 16.16)
       htmlentities (~> 4)
       i18n (~> 0.7)
       kramdown (~> 1.15.0)
-      money (~> 6.7)
       nokogiri (~> 1.5)
-      sanitize (~> 2.1.0)
+      nokogumbo (~> 2)
+      rinku (~> 2.0)
+      sanitize (~> 5)
     govuk-content-schema-test-helpers (1.6.1)
       json-schema (~> 2.8.0)
     govuk-lint (3.11.2)
@@ -232,7 +231,6 @@ GEM
     hashdiff (0.4.0)
     hashery (2.1.2)
     hashie (3.6.0)
-    highline (2.0.2)
     htmlentities (4.3.4)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
@@ -308,8 +306,6 @@ GEM
       redis
     mocha (1.9.0)
       metaclass (~> 0.0.1)
-    money (6.13.3)
-      i18n (>= 0.6.4, <= 2)
     msgpack (1.2.10)
     multi_json (1.13.1)
     multi_test (0.1.2)
@@ -324,6 +320,8 @@ GEM
     nio4r (2.4.0)
     nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
+    nokogumbo (2.0.1)
+      nokogiri (~> 1.8, >= 1.8.4)
     ntlm-http (0.1.1)
     null_logger (0.0.1)
     oauth2 (1.4.1)
@@ -446,8 +444,10 @@ GEM
     rufus-scheduler (3.5.0)
       fugit (~> 1.1, >= 1.1.1)
     safe_yaml (1.0.5)
-    sanitize (2.1.1)
-      nokogiri (>= 1.4.4)
+    sanitize (5.0.0)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.8.0)
+      nokogumbo (~> 2.0)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
@@ -590,7 +590,7 @@ DEPENDENCIES
   gds-api-adapters
   gds-sso (~> 14.1)
   globalize (~> 5)
-  govspeak (~> 5.5.0)
+  govspeak (~> 6.3)
   govuk-content-schema-test-helpers
   govuk-lint (~> 3)
   govuk_ab_testing (~> 2.4x)