chore: upgrade phpunit to 12.5

tests/Command/MyEpImportCommandTest.php

@@ -11,6 +11,7 @@ use App\MyEp\Import\TravelExport;
 use App\MyEp\Import\TravelExportClient;
 use Doctrine\DBAL\Connection;
 use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\MockObject\Stub;
 use PHPUnit\Framework\TestCase;
 use Psr\Log\NullLogger;
 use Symfony\Component\Console\Command\Command;
@@ -87,7 +88,7 @@ class MyEpImportCommandTest extends TestCase
 
     public function testItRefusesToRunWhenTheExportCannotBeRead(): void
     {
-        $client = $this->createMock(TravelExportClient::class);
+        $client = $this->createStub(TravelExportClient::class);
         $client->method('fetchAll')->willThrowException(new ApiException('gateway timeout'));
 
         $tester = new CommandTester(new MyEpImportCommand(
@@ -184,7 +185,7 @@ class MyEpImportCommandTest extends TestCase
         int $skipped = 0,
         int $pickupsWithoutMasterData = 0,
     ): CommandTester {
-        $client = $this->createMock(TravelExportClient::class);
+        $client = $this->createStub(TravelExportClient::class);
         $client->method('fetchAll')->willReturn(
             new TravelExport($rows, $skipped, $pickupsWithoutMasterData, '2026-09-29T03:20:00+02:00')
         );
@@ -212,9 +213,9 @@ class MyEpImportCommandTest extends TestCase
         return $connection;
     }
 
-    private function writingConnection(int $existingId): Connection&MockObject
+    private function writingConnection(int $existingId): Connection&Stub
     {
-        $connection = $this->createMock(Connection::class);
+        $connection = $this->createStub(Connection::class);
         $connection->method('fetchOne')->willReturn($existingId);
 
         return $connection;