Bump govuk_sidekiq from 8.0.1 to 9.0.0

Bumps [govuk_sidekiq](https://github.com/alphagov/govuk_sidekiq) from 8.0.1 to 9.0.0.
- [Changelog](https://github.com/alphagov/govuk_sidekiq/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk_sidekiq@v8.0.1...v9.0.0)

---
updated-dependencies:
- dependency-name: govuk_sidekiq
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Gemfile.lock

@@ -255,12 +255,11 @@ GEM
     govuk_schemas (5.0.4)
       faker (~> 3.4.1)
       json-schema (>= 2.8, < 4.4)
-    govuk_sidekiq (8.0.1)
+    govuk_sidekiq (9.0.0)
       gds-api-adapters (>= 19.1.0)
       govuk_app_config (>= 1.1)
-      redis (< 5)
-      redis-namespace (~> 1.6)
-      sidekiq (~> 6.5, >= 6.5.12)
+      redis-client (>= 0.22.2)
+      sidekiq (~> 7.0, < 8)
     govuk_test (4.1.0)
       brakeman (>= 5.0.2)
       capybara (>= 3.36)
@@ -318,6 +317,7 @@ GEM
       addressable (~> 2.8)
       childprocess (~> 5.0)
     link_header (0.0.8)
+    logger (1.6.1)
     logstasher (2.1.5)
       activesupport (>= 5.2)
       request_store
@@ -339,9 +339,10 @@ GEM
     marcel (1.0.4)
     matrix (0.4.2)
     method_source (1.1.0)
-    mime-types (3.5.2)
+    mime-types (3.6.0)
+      logger
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2024.0820)
+    mime-types-data (3.2024.1001)
     mini_mime (1.1.5)
     mini_portile2 (2.8.7)
     minitest (5.25.1)
@@ -673,9 +674,10 @@ GEM
       zeitwerk (~> 2.5)
     rainbow (3.1.1)
     rake (13.2.1)
-    redis (4.8.1)
-    redis-namespace (1.11.0)
-      redis (>= 4)
+    redis (5.3.0)
+      redis-client (>= 0.22.0)
+    redis-client (0.22.2)
+      connection_pool
     regexp_parser (2.9.2)
     request_store (1.7.0)
       rack (>= 1.4)
@@ -761,10 +763,12 @@ GEM
     shoulda-context (2.0.0)
     shoulda-matchers (4.5.1)
       activesupport (>= 4.2.0)
-    sidekiq (6.5.12)
-      connection_pool (>= 2.2.5, < 3)
-      rack (~> 2.0)
-      redis (>= 4.5.0, < 5)
+    sidekiq (7.3.2)
+      concurrent-ruby (< 2)
+      connection_pool (>= 2.3.0)
+      logger
+      rack (>= 2.2.4)
+      redis-client (>= 0.22.2)
     simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)