Update api/project.py

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: AviAvni

api/project.py

@@ -76,7 +76,9 @@ def from_local_repository(cls, path: Path|str):
 
         return cls(name, path, url)
 
-    def analyze_sources(self, ignore: Optional[List[str]] = []) -> Graph:
+    def analyze_sources(self, ignore: Optional[List[str]] = None) -> Graph:
+        if ignore is None:
+            ignore = []
         analyzer = SourceAnalyzer()
         analyzer.analyze_local_folder(self.path, self.graph, ignore)