Update note on supported Elasticsearch versions to include 8.4+ (#2151)

Author: turegjorup

core/elasticsearch.md

@@ -8,12 +8,19 @@ application search, security analytics, metrics, logging, etc.
 API Platform comes natively with the **reading** support for Elasticsearch. It uses internally the official PHP client
 for Elasticsearch: [Elasticsearch-PHP](https://www.elastic.co/guide/en/elasticsearch/client/php-api/current/index.html).
 
-Be careful, API Platform only supports Elasticsearch >= 7.11.0 < 8.0.
+Be careful, API Platform only supports Elasticsearch >= 7.11.0 < 8.0 and Elasticsearch >= 8.4 < 9.0. Support for 
+Elasticsearch 8 was introduced in API Platform 3.2.
 
 ## Enabling Reading Support
 
-To enable the reading support for Elasticsearch, simply require the Elasticsearch-PHP package using Composer:
+To enable the reading support for Elasticsearch, simply require the Elasticsearch-PHP package using Composer. For
+Elasticsearch 8:
 
+```console
+composer require elasticsearch/elasticsearch:^8.4
+```
+
+For Elasticsearch 7:
 ```console
 composer require elasticsearch/elasticsearch:^7.11
 ```