fix: Fix return types in tests.

src/Bundle/ChillMainBundle/Tests/Export/ExportManagerTest.php

@@ -42,14 +42,14 @@ final class ExportManagerTest extends KernelTestCase
      */
     private $prophet;
 
-    public function setUp(): void
+    protected function setUp(): void
     {
         self::bootKernel();
 
         $this->prophet = new \Prophecy\Prophet();
     }
 
-    public function tearDown()
+    protected function tearDown(): void
     {
         $this->prophet->checkPredictions();
     }