diff --git a/Gemfile.lock b/Gemfile.lock
index 50bffe560..3dd09c8e0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,8 +27,8 @@ GEM
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actionpack-page_caching (1.2.3)
-      actionpack (>= 5.0.0)
+    actionpack-page_caching (1.2.4)
+      actionpack (>= 4.0.0)
     actiontext (6.1.5.1)
       actionpack (= 6.1.5.1)
       activerecord (= 6.1.5.1)
@@ -65,15 +65,15 @@ GEM
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
     ast (2.4.2)
-    better_errors (2.8.1)
+    better_errors (2.9.1)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
-    binding_of_caller (0.8.0)
+    binding_of_caller (1.0.0)
       debug_inspector (>= 0.0.1)
-    brakeman (5.2.1)
+    brakeman (5.2.3)
     builder (3.2.4)
-    capybara (3.36.0)
+    capybara (3.37.1)
       addressable
       matrix
       mini_mime (>= 0.1.3)
@@ -82,19 +82,20 @@ GEM
       rack-test (>= 0.6.3)
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
-    childprocess (3.0.0)
-    climate_control (1.0.1)
+    childprocess (4.1.0)
+    climate_control (1.1.1)
     coderay (1.1.3)
     concurrent-ruby (1.1.10)
-    crack (0.4.4)
+    crack (0.4.5)
+      rexml
     crass (1.0.6)
-    debug_inspector (0.0.3)
-    docile (1.3.2)
+    debug_inspector (1.1.0)
+    docile (1.4.0)
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
     erubi (1.10.0)
-    execjs (2.7.0)
-    exifr (1.3.7)
+    execjs (2.8.1)
+    exifr (1.3.9)
     ffi (1.15.5)
     fspath (3.1.2)
     gds-api-adapters (79.2.0)
@@ -107,7 +108,7 @@ GEM
       activesupport (>= 5.0)
     govuk-content-schema-test-helpers (1.6.1)
       json-schema (~> 2.8.0)
-    govuk_app_config (4.6.1)
+    govuk_app_config (4.6.2)
       logstasher (~> 2.1)
       prometheus_exporter (~> 2.0)
       puma (~> 5.6)
@@ -126,25 +127,25 @@ GEM
       rails (>= 6)
       rouge
       sprockets (>= 3)
-    govuk_test (3.0.0)
+    govuk_test (3.0.1)
       brakeman (>= 5.0.2)
-      capybara
+      capybara (>= 3.36)
       puma
-      selenium-webdriver (>= 3.142)
+      selenium-webdriver (>= 4.0)
     hashdiff (1.0.1)
     http-accept (1.7.0)
-    http-cookie (1.0.4)
+    http-cookie (1.0.5)
       domain_name (~> 0.5)
     i18n (1.10.0)
       concurrent-ruby (~> 1.0)
-    image_optim (0.27.0)
+    image_optim (0.31.1)
       exifr (~> 1.2, >= 1.2.2)
       fspath (~> 3.0)
-      image_size (>= 1.5, < 3)
+      image_size (>= 1.5, < 4)
       in_threads (~> 1.3)
       progress (~> 3.0, >= 3.0.1)
-    image_size (2.1.0)
-    in_threads (1.5.4)
+    image_size (3.0.2)
+    in_threads (1.6.0)
     jasmine-core (3.99.0)
     json-schema (2.8.1)
       addressable (>= 2.4)
@@ -152,7 +153,7 @@ GEM
     kramdown (2.4.0)
       rexml
     link_header (0.0.8)
-    listen (3.2.1)
+    listen (3.7.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     logstasher (2.1.5)
@@ -176,7 +177,7 @@ GEM
       capybara
       minitest (~> 5.0)
       rake
-    mocha (1.11.2)
+    mocha (1.14.0)
     netrc (0.11.0)
     nio4r (2.5.8)
     nokogiri (1.13.6)
@@ -187,10 +188,10 @@ GEM
     parser (3.1.2.0)
       ast (~> 2.4.1)
     plek (4.0.0)
-    progress (3.5.2)
+    progress (3.6.0)
     prometheus_exporter (2.0.3)
       webrick
-    pry (0.13.1)
+    pry (0.14.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.7)
@@ -219,7 +220,7 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.4.2)
+    rails-html-sanitizer (1.4.3)
       loofah (~> 2.3)
     railties (6.1.5.1)
       actionpack (= 6.1.5.1)
@@ -230,10 +231,10 @@ GEM
     rainbow (3.1.1)
     raindrops (0.20.0)
     rake (13.0.6)
-    rb-fsevent (0.10.4)
+    rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    redis (4.2.2)
+    redis (4.6.0)
     regexp_parser (2.5.0)
     request_store (1.5.1)
       rack (>= 1.4)
@@ -243,7 +244,7 @@ GEM
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
     rexml (3.2.5)
-    rouge (3.28.0)
+    rouge (3.29.0)
     rubocop (1.30.1)
       parallel (~> 1.10)
       parser (>= 3.1.0.0)
@@ -279,9 +280,11 @@ GEM
       sprockets (> 3.0)
       sprockets-rails
       tilt
-    selenium-webdriver (3.142.7)
-      childprocess (>= 0.5, < 4.0)
-      rubyzip (>= 1.2.2)
+    selenium-webdriver (4.2.1)
+      childprocess (>= 0.5, < 5.0)
+      rexml (~> 3.2, >= 3.2.5)
+      rubyzip (>= 1.2.2, < 3.0)
+      websocket (~> 1.0)
     sentry-rails (5.3.1)
       railties (>= 5.0)
       sentry-ruby-core (~> 5.3.1)
@@ -291,10 +294,12 @@ GEM
     sentry-ruby-core (5.3.1)
       concurrent-ruby
     shoulda-context (2.0.0)
-    simplecov (0.19.0)
+    simplecov (0.21.2)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.4)
     sprockets (4.0.3)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -311,22 +316,23 @@ GEM
       execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
-    unf_ext (0.0.8.1)
+    unf_ext (0.0.8.2)
     unicode-display_width (2.1.0)
     unicorn (6.1.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
-    webmock (3.9.1)
-      addressable (>= 2.3.6)
+    webmock (3.14.0)
+      addressable (>= 2.8.0)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
     webrick (1.7.0)
+    websocket (1.2.9)
     websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    zeitwerk (2.5.4)
+    zeitwerk (2.6.0)
 
 PLATFORMS
   ruby