Change xml file backup

src/xml_parser.py

@@ -1,10 +1,11 @@
 import lxml.etree as ET
 from pathlib import Path
 import click
+from datetime import datetime
 
 def write_xml_data(root: ET.Element, file_path: Path, pretty: bool = True) -> None:
     if file_path.exists():
-        file_path.rename(file_path.with_suffix(".bak"))
+        file_path.rename(str(file_path) + f".{datetime.now().strftime('%Y-%m-%d.%H%M%S')}.bak")
     xml_str = ET.tostring(root, encoding="utf-8", xml_declaration=True, pretty_print=pretty)
     if pretty:
         # Parse the XML string to ensure proper indentation