bug #550 Fix build on 1.10 (loic425)

This PR was merged into the 1.10 branch.

Discussion
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| Q               | A
| --------------- | -----
| Bug fix?        | yes
| New feature?    | no
| BC breaks?      | no
| Deprecations?   | no
| Related tickets | 
| License         | MIT

based on #546 comment


Commits
-------

0e73548 Fix build on 1.10

psalm.xml

@@ -31,6 +31,12 @@
             </errorLevel>
         </ArgumentTypeCoercion>
 
+        <DeprecatedClass>
+            <errorLevel type="info">
+                <referencedClass name="Doctrine\ORM\Event\LifecycleEventArgs" /> <!-- deprecated in doctrine/orm 2.14 -->
+            </errorLevel>
+        </DeprecatedClass>
+
         <DeprecatedMethod>
             <errorLevel type="suppress">
                 <referencedMethod name="Symfony\Component\EventDispatcher\Event::isPropagationStopped" />