Fix dataclass wiring issue

Author: JLLeitschuh

vulnerability_fix_engine.py

@@ -6,7 +6,7 @@
 import shutil
 import string
 from collections import Counter
-from dataclasses import dataclass, asdict
+from dataclasses import dataclass, asdict, field
 from random import random
 from typing import List, Optional, Dict, Generator
 
@@ -93,7 +93,7 @@ class VulnerabilityFixModule:
     save_point_location: str
     pr_message_file_absolute_path: str
     commit_message: str
-    _cached_vulnerable_projects: List['VulnerableProjectFiles'] = []
+    _cached_vulnerable_projects: List['VulnerableProjectFiles'] = field(default_factory=list)
 
     def clean_previous_run(self):
         # Cleanup method to get rid of previous files