Bump govuk_publishing_components from 11.2.0 to 12.1.0

Bumps [govuk_publishing_components](https://github.com/alphagov/govuk_publishing_components) from 11.2.0 to 12.1.0.
- [Release notes](https://github.com/alphagov/govuk_publishing_components/releases)
- [Changelog](https://github.com/alphagov/govuk_publishing_components/blob/master/CHANGELOG.md)
- [Commits](alphagov/govuk_publishing_components@v11.2.0...v12.1.0)

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -17,7 +17,7 @@ gem 'gds-api-adapters', '~> 53.1'
 gem 'govuk_ab_testing', '~> 2.4'
 gem 'govuk_app_config', '~> 1.10'
 gem 'govuk_frontend_toolkit', '~> 8.1.0'
-gem 'govuk_publishing_components', '~> 11.2.0'
+gem 'govuk_publishing_components', '~> 12.1.0'
 gem 'plek', '~> 2.1'
 gem 'slimmer', '~> 13.0'
 

Gemfile.lock

@@ -127,15 +127,14 @@ GEM
     govuk_frontend_toolkit (8.1.0)
       railties (>= 3.1.0)
       sass (>= 3.2.0)
-    govuk_publishing_components (11.2.0)
+    govuk_publishing_components (12.1.0)
       govspeak (>= 5.0.3)
       govuk_app_config
       govuk_frontend_toolkit
       rails (>= 5.0.0.1)
       rake
       rouge
       sass-rails (>= 5.0.4)
-      slimmer (>= 11.1.0)
     govuk_schemas (3.2.0)
       json-schema (~> 2.8.0)
     hashdiff (0.3.7)
@@ -169,7 +168,7 @@ GEM
     loofah (2.2.2)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.7.0)
+    mail (2.7.1)
       mini_mime (>= 0.1.1)
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
@@ -190,7 +189,7 @@ GEM
     multipart-post (2.0.0)
     netrc (0.11.0)
     nio4r (2.3.1)
-    nokogiri (1.8.4)
+    nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
     nokogumbo (1.5.0)
       nokogiri
@@ -367,7 +366,7 @@ DEPENDENCIES
   govuk_ab_testing (~> 2.4)
   govuk_app_config (~> 1.10)
   govuk_frontend_toolkit (~> 8.1.0)
-  govuk_publishing_components (~> 11.2.0)
+  govuk_publishing_components (~> 12.1.0)
   govuk_schemas (~> 3.2)
   htmlentities (~> 4.3)
   jasmine-rails