feat: Add Ruby-3.3 support

Extracted from ixti#175

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ ruby-2.7, ruby-3.0, ruby-3.1, ruby-3.2 ]
+        ruby: [ ruby-2.7, ruby-3.0, ruby-3.1, ruby-3.2, ruby-3.3 ]
         redis: [ "redis:6.2", "redis:7.0", "redis:7.2" ]
 
     steps:

CHANGES.md

@@ -8,6 +8,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Add Ruby 3.3 support
+
 ## [1.2.0] - 2023-12-18
 
 ### Added

README.adoc

@@ -107,16 +107,15 @@ end
 * `Sidekiq::Throttled::Middlewares::Server`
 
 The middleware is automatically injected when you require `sidekiq/throttled`.
-In rare cases this might be an issue. You can change to order manually:
+In rare cases, when this causes an issue, you can change middleware order manually:
 
 [source,ruby]
 ----
 Sidekiq.configure_server do |config|
   # ...
 
   config.server_middleware do |chain|
-    chain.remove(Sidekiq::Throttled::Middlewares::Server)
-    chain.add(Sidekiq::Throttled::Middlewares::Server)
+    chain.prepend(Sidekiq::Throttled::Middlewares::Server)
   end
 end
 ----
@@ -271,6 +270,7 @@ This library aims to support and is tested against the following Ruby versions:
 * Ruby 3.0.x
 * Ruby 3.1.x
 * Ruby 3.2.x
+* Ruby 3.3.x
 
 If something doesn't work on one of these versions, it's a bug.