update psalm

Author: chriskapp

psalm.xml

@@ -5,6 +5,9 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+    findUnusedCode="false"
+    findUnusedIssueHandlerSuppression="false"
+    ensureOverrideAttribute="false"
 >
     <projectFiles>
         <directory name="src" />
@@ -13,7 +16,8 @@
         </ignoreFiles>
     </projectFiles>
     <issueHandlers>
-        <UnusedClass errorLevel="suppress" />
-        <PossiblyUnusedMethod errorLevel="suppress" />
+        <InvalidOperand errorLevel="suppress" />
+        <ClassMustBeFinal errorLevel="suppress" />
+        <ImplicitToStringCast errorLevel="suppress" />
     </issueHandlers>
 </psalm>