Replace dataclass Mutable Default Values with Call to field

vulnerability_fix_engine.py

@@ -131,7 +131,7 @@ def _read_repository_and_file_names(json_file_name: str) -> 'VulnerableProjectFi
         return VulnerableProjectFiles(project_name, files)
 
     def _load_vulnerable_projects(self) -> List['VulnerableProjectFiles']:
-        vulnerable_projects: List[VulnerableProjectFiles] = []
+        vulnerable_projects: List[VulnerableProjectFiles] = field(default_factory=list)
         for json_file in self._list_all_json_files():
             vulnerable = self._read_repository_and_file_names(json_file)
             if not self.should_accept_project(vulnerable.project_name):
@@ -269,7 +269,7 @@ def submodule_files(self) -> List[str]:
 
         We're not going to be fixing pom files in Git submodules so this allows us to filter them out.
         """
-        files: List[str] = []
+        files: List[str] = field(default_factory=list)
         submodule_file_path: str = self.project_file_name() + '/.gitmodules'
         if not os.path.isfile(submodule_file_path):
             return []
@@ -283,7 +283,7 @@ async def do_fix_vulnerabilities(self) -> VulnerabilityFixReport:
         project_vulnerabilities_fixed = 0
         project_files_fixed = 0
         submodules = self.submodule_files()
-        files_fixed: List[str] = []
+        files_fixed: List[str] = field(default_factory=list)
         for file in self.project_files.files:
             # Skip submodule files
             skip = next((True for submodule in submodules if file.startswith(submodule)), False)