OZG-6223 OZG-7401 Timeout for async requests

Default is 30 seconds, here set to 5 minutes (value in milliseconds)

alfa-service/src/main/java/de/ozgcloud/alfa/attachment/AttachmentByVorgangController.java

@@ -43,6 +43,7 @@ import de.ozgcloud.alfa.common.file.OzgFile;
 import de.ozgcloud.alfa.common.file.OzgFileService;
 import de.ozgcloud.alfa.common.zipdownload.ZipDownloadService;
 import de.ozgcloud.alfa.vorgang.VorgangController;
+import de.ozgcloud.common.errorhandling.TechnicalException;
 import lombok.RequiredArgsConstructor;
 
 @RestController
@@ -85,7 +86,7 @@ public class AttachmentByVorgangController {
 		try {
 			return Files.size(file.toPath());
 		} catch (IOException e) {
-			throw new RuntimeException(e);
+			throw new TechnicalException("Error getting file size", e);
 		}
 	}
 }