minor #63750 Configure deprecation triggers (derrabus)

This PR was merged into the 7.4 branch.

Discussion
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 Configure deprecation triggers

| Q             | A
| ------------- | ---
| Branch?       | 7.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        | N/A
| License       | MIT

By configuring deprecation triggers in PHPUnit, we enable PHPUnit to be more precise about where an observed deprecation warning originates.

#### Before

<img width="645" height="237" alt="Bildschirmfoto 2026-03-24 um 14 16 33" src="https://github.com/user-attachments/assets/f44556b8-0ade-4c56-9e59-be5443a439fb" />

#### After

<img width="732" height="226" alt="Bildschirmfoto 2026-03-24 um 14 17 23" src="https://github.com/user-attachments/assets/dbdc0a8e-b129-440d-93f9-ff813611f42b" />

Commits
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1252f4ef7bb Configure deprecation triggers

Author: nicolas-grekas

phpunit.xml.dist

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/11.3/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/11.5/phpunit.xsd"
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
@@ -20,6 +20,11 @@
     </testsuites>
 
     <source ignoreSuppressionOfDeprecations="true">
+        <deprecationTrigger>
+            <function>trigger_deprecation</function>
+            <method>Doctrine\Deprecations\Deprecation::trigger</method>
+            <method>Doctrine\Deprecations\Deprecation::triggerIfCalledFromOutside</method>
+        </deprecationTrigger>
         <include>
             <directory>./</directory>
         </include>