Update dependency phpstan/phpstan to ^2.1.40 (#65)

* Update dependency phpstan/phpstan to ^2.1.40

| datasource | package         | from   | to     |
| ---------- | --------------- | ------ | ------ |
| packagist  | phpstan/phpstan | 2.1.39 | 2.1.40 |

* SA fix

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Filippo Tessarotto <zoeslam@gmail.com>

Author: renovate[bot]

composer.json

@@ -14,7 +14,7 @@
         "php": "~8.4.0 || ~8.5.0"
     },
     "require-dev": {
-        "phpstan/phpstan": "^2.1.39",
+        "phpstan/phpstan": "^2.1.40",
         "phpstan/phpstan-phpunit": "^2.0.16",
         "phpstan/phpstan-strict-rules": "^2.0.10",
         "phpunit/phpunit": "^13.0.5",

phpunit.xml

@@ -4,8 +4,9 @@
         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
         colors="true"
         cacheDirectory=".phpunit.cache"
-        displayDetailsOnPhpunitDeprecations="true"
-        displayDetailsOnTestsThatTriggerDeprecations="true"
+        failOnAllIssues="true"
+        displayDetailsOnAllIssues="true"
+        beStrictAboutChangesToGlobalState="true"
 >
   <coverage>
     <report>

tests/ErrorHandlerTest.php

@@ -189,8 +189,10 @@ public function testEmailException(): void
         $this->errorHandler->emailException($this->exception);
 
         self::assertNotEmpty($this->emailsSent);
-        $message     = \current($this->emailsSent);
+        $message     = $this->emailsSent[0];
+        self::assertIsArray($message);
         $messageText = $message['body'];
+        self::assertIsString($messageText);
         self::assertStringContainsString($this->exception->getMessage(), $messageText);
         self::assertStringContainsString($_SESSION[$key], $messageText);
         self::assertStringContainsString($_POST[$key], $messageText);