Run DXP 3.3 on PHP 8.3 (#2388)

* Since 3.3.38, Php82HideDeprecationsErrorHandler is installed by default

---------

Co-authored-by: Adam Wójs <adam@wojs.pl>

docs/getting_started/requirements.md

@@ -120,29 +120,13 @@ Recommendation for production setups is to use Varnish/Fastly, Redis/Memcached,
 
 === "Ibexa DXP v3.3"
 
-    - 8.2 (see note below)
+    - 8.3
+    - 8.2
     - 8.1
     - 8.0 (PHP 8.0 has reached its End of Life. Unless you have extended support from vendors like Debian or Zend, you should use PHP 8.1)
     - 7.4 (PHP 7.4 has reached its End of Life. Unless you have extended support from vendors like Debian or Zend, you should use PHP 8.1)
     - 7.3 (PHP 7.3 has reached its End of Life. Unless you have extended support from vendors like Debian or Zend, you should use PHP 8.1)
 
-    !!! note "Quiet PHP 8.2 deprecation notices from 3rd parties "
-
-        To avoid PHP 8.2 deprecation notices appearing in outputs (and, for example, breaking REST answers),
-        add the following to your `composer.json` after installation:
-
-        ```json
-        "runtime": {
-            "error_handler": "\\Ibexa\\Contracts\\Core\\MVC\\Symfony\\ErrorHandler\\Php82HideDeprecationsErrorHandler"
-        }
-        ```
-
-        Then run the following command:
-
-        ```bash
-        composer dump-autoload
-        ```
-
 === "eZ Platform v2.5"
 
     - 7.1 (PHP 7.1 has reached its End of Life. Unless you have extended support from vendors like Debian or Zend, you should upgrade to Ibexa DXP v3.3 or v4.x)