[BUGFIX] Migrate last ResourceFactory pseudo factory usage

See https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/10.3/Deprecation-90260-ResourceFactorygetInstancePseudo-factory.html

Author: mbrodala

Classes/Hooks/DefaultUploadFolder.php

@@ -92,7 +92,7 @@ private function createUploadFolder($combinedFolderIdentifier): ?Folder
         $fileProcessor->start($data);
         $fileProcessor->processData();
 
-        $uploadFolder = ResourceFactory::getInstance()->getFolderObjectFromCombinedIdentifier(
+        $uploadFolder = GeneralUtility::makeInstance(ResourceFactory::class)->getFolderObjectFromCombinedIdentifier(
             $combinedFolderIdentifier
         );
         return $uploadFolder;