Resolve #3430966 "Automated drupal 11"

Closes #3430966

src/IcsFileManager.php

@@ -5,10 +5,10 @@ namespace Drupal\ics_field;
 use Drupal\Core\Entity\ContentEntityBase;
 use Drupal\Core\Entity\EntityFieldManager;
 use Drupal\Core\Field\FieldDefinitionInterface;
+use Drupal\Core\File\FileExists;
 use Drupal\Core\File\FileSystemInterface;
 use Drupal\Core\Logger\LoggerChannelFactoryInterface;
 use Drupal\Core\Messenger\MessengerInterface;
-use Drupal\file\FileRepositoryInterface;
 use Drupal\Core\Utility\Token;
 use Drupal\file\Entity\File;
 use Drupal\file\FileUsage\FileUsageInterface;
@@ -226,7 +226,7 @@ class IcsFileManager {
 
     $file = File::load($fileId);
     $fileUri = $file->getFileUri();
-    if (!\Drupal::service('file.repository')->writeData($icsFileStr, $fileUri, FileSystemInterface::EXISTS_REPLACE)) {
+    if (!\Drupal::service('file.repository')->writeData($icsFileStr, $fileUri, FileExists::Replace)) {
       $this->handleFileSaveError($fileUri);
     }
     // Always return the file id, so that it retains the reference to the
@@ -269,7 +269,7 @@ class IcsFileManager {
                         ->uuid()) .
                   '_event.ics';
       $fileUri = $uploadLocation . '/' . $fileName;
-      $file = \Drupal::service('file.repository')->writeData($icsFileStr, $fileUri, FileSystemInterface::EXISTS_REPLACE);
+      $file = \Drupal::service('file.repository')->writeData($icsFileStr, $fileUri, FileExists::Replace);
       if ($file) {
         return $file->id();
       }