Preparing for release, 2.4.0.

Author: dblock

CHANGELOG.md

@@ -1,10 +1,9 @@
-### 2.4.0 (Next)
+### 2.4.0 (2024/07/14)
 
 * [#516](https://github.com/slack-ruby/slack-ruby-client/pull/516): Add support for Ruby 3.3 - [@olleolleolle](https://github.com/olleolleolle).
 * [#520](https://github.com/slack-ruby/slack-ruby-client/pull/520): Add support for basic markdown formatting - [@nbgoodall](https://github.com/nbgoodall).
 * [#523](https://github.com/slack-ruby/slack-ruby-client/pull/523): Fix coveralls handling parallel jobs - [@dblock](https://github.com/dblock).
 * [#522](https://github.com/slack-ruby-client/pulls/522): Update API from [slack-api-ref@8a22e57](https://github.com/slack-ruby/slack-api-ref/commit/8a22e57) - [@slack-ruby-ci-bot](https://github.com/apps/slack-ruby-ci-bot).
-* Your contribution here.
 
 ### 2.3.0 (2024/01/31)
 

README.md

@@ -82,7 +82,7 @@ A Ruby client for the Slack [Web](https://api.slack.com/web), [RealTime Messagin
 
 ## Stable Release
 
-You're reading the documentation for the **next** release of slack-ruby-client. Please see the documentation for the [last stable release, v2.3.0](https://github.com/slack-ruby/slack-ruby-client/blob/v2.3.0/README.md) unless you're integrating with HEAD. See [UPGRADING](UPGRADING.md) when upgrading from an older version.
+You're reading the documentation for the **stabke** release of slack-ruby-client, 2.4.0. See [UPGRADING](UPGRADING.md) when upgrading from an older version.
 
 ## Installation