fix: use the same margins for x and y in the stamp feature

src/main/java/stirling/software/SPDF/utils/WebResponseUtils.java

@@ -1,6 +1,5 @@
 package stirling.software.SPDF.utils;
 
-import io.github.pixee.security.Filenames;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.net.URLEncoder;
@@ -13,6 +12,8 @@ import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.multipart.MultipartFile;
 
+import io.github.pixee.security.Filenames;
+
 public class WebResponseUtils {
 
     public static ResponseEntity<byte[]> boasToWebResponse(