change back to regex from re

gpt_engineer/core/chat_to_files.py

@@ -26,6 +26,8 @@
 
 from typing import Dict, Tuple
 
+from regex import regex
+
 from gpt_engineer.core.diff import ADD, REMOVE, RETAIN, Diff, Hunk
 from gpt_engineer.core.files_dict import FilesDict, file_to_lines_dict
 
@@ -129,7 +131,7 @@ def parse_diffs(diff_string: str) -> dict:
     - dict: A dictionary of Diff objects keyed by filename.
     """
     # Regex to match individual diff blocks
-    diff_block_pattern = re.compile(
+    diff_block_pattern = regex.compile(
         r"```.*?\n\s*?--- .*?\n\s*?\+\+\+ .*?\n(?:@@ .*? @@\n(?:[-+ ].*?\n)*?)*?```",
         re.DOTALL,
     )